Download Electricity Market Grid Regulation

(Published in Official Gazette no. 25001 on 22/01/2003)
ELECTRICITY MARKET
GRID REGULATION
PART ONE
Objective, Scope, Legal Basis, Definitions and Abbreviations
Objective
Article 1- The objective of this Regulation is to set forth the principles and
procedures regarding the standards applicable for reliable and low-cost operation of
the transmission system and ensuring system stability and energy quality in order to
establish the market model envisaged in Law no. 4628.
Scope
Article 2- This Regulation covers the liabilities of TEİAŞ, the users of the
transmission system and other users who are connected to the distribution system but
affect the transmission system and the facility design and operation rules they should
comply with, and the principles regarding the provision of technical data required for
transmission system planning through balancing supply and demand and for the
operation of the transmission system in line with the balancing rules.
Legal Basis
Article 3- This Regulation has been issued in compliance with the provisions of
Electricity Market Law no. 4628.
Definitions and Abbreviations
Article 4- For the purposes of interpretation and implementation of this Regulation,
the following terms and abbreviations shall bear the following meanings:
1.
Law: Electricity Market Law No. 4628 dated February 20, 2001,
2.
Authority: The Energy Market Regulatory Authority,
3.
Board: The Energy Market Regulatory Board,
4.
RLDC: Regional Load Dispatch Center,
5.
IEC: International Electrotechnic Commission,
6.
CCGT: Combined Cycle Gas Turbine,
7.
TEİAŞ: Turkish Electricity Transmission Co. Inc.,
8.
TETAŞ: Turkish Electricity Trading and Contracting Co. Inc.,
9.
UCTE: Union for Coordination of Transmission of Electricity,
10.
NLDC: National Load Dispatch Center,
11. Island: The independent subsystems of the transmission system that have no
electrical connection with the remaining parts of the transmission system,
12. Main interconnected system: 380 kV and 154 kV components of the
transmission system, excluding user circuits,
1
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
13. Overexcitation operation: Increasing the excitation voltage of synchronous
compensators and/or generators when the system excitation voltage decreases below
specified operation values,
14. European Standards: Specifications and standards in common use in
European Union countries or Turkish standards prepared in accordance with those,
15. Disconnector: The equipment that connects and disconnects the non-loaded
electric circuits,
16. Connection and/or use of system agreements: The agreements containing
the terms and conditions specific to a generation company, an autoproducer or an
autoproducer group, a distribution company or consumers for access or connection to a
transmission or a distribution system,
17. Connection point: The site or point where a user connects to the system as
per the connection agreements,
18. Connection request: The request of a user to connect its facility to a certain
point on the transmission system,
19.
Bus-bar: The conductor where the feeders of the same voltage connect,
20. Supply point: The point on the transmission and/or distribution system where
the customers are supplied electricity,
21. Block: For combined cycle power plants, more than one gas turbine and
generator that can load and un-load together, including the steam turbine and generator fed
by these,
22. Regional Load Dispatch Center: The control center that monitors
generation, transmission and consumption of electricity and responsible for coordination
and management of operating maneuvers in a certain region of the transmission system,
23.
Steam Unit: The unit that transmits the energy in the steam to the turbine,
24. Working permit request: For maintenance and repair works on the
equipment that affect the transmission and/or distribution system or creates interruption in
the electricity supply to the users; application of a person authorized by the license holding
legal entity to RLDC in writing before commencing such works,
25. Working permit request form: The form, where information related to
working permit request is filled in,
26. Approval of working permit: Approval by RLDC of the working permit
request considering the condition of the system and in coordination with other units,
27. Distribution: The transport of electricity through lines of 36 kV or lower
voltage level,
28.
company,
Distribution region: The region defined in the license of a distribution
29. Distribution system: Electricity distribution facilities and grid grid operated
and/or owned by a distribution company within its designated distribution region,
30. Distribution Company: Any legal entity engaged in electricity distribution
in a designated geographical region,
31. Distribution facility: All facilities and grid established exclusively for
distribution of electricity at the termination point of transmission facilities,
2
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
32. Fluctuating load: Variable impedance load which lags interrupted current in
different amplitudes and distort the waveform of grid voltage,
33. Balancing: The actions taken by NLDC in order to balance the system supply
and demand,
34. Balancing system: Real-time balancing of supply and demand in the system
operation by NLDC, through evaluation of bids and offers of parties subject to Balancing
and Settlement Code.
35. Outage: Automatic or manual outage of a part of the plant and/or equipment
due to maintenance, repair or fault,
36. Low frequency relay: The equipment that gives ‘opening instruction’ to
breakers for unloading if the frequency decreases below pre-specified operation values,
37. Underexcitation or overexcitation: Increasing or decreasing the excitation
voltage of synchronous compensators and/or generators in order to regulate system
voltage,
38. Power cut: Cutting the power of plant and/or equipment from every direction
via circuit breakers and disconnectors,
39. Unavailable equipment: Equipment outaged due to reasons like fault,
maintenance, and repair,
40.
Available equipment: Equipment ready to operate,
41. Interconnection: Connection of national transmission system to transmission
system of another country,
42. Interconnection agreement: Agreement made between TEİAŞ and other
party establishing interconnection and/or licensed legal entities receiving service from this
interconnection,
43. Phase unbalance: Different amplitude and phase angles between phase
voltages at a certain point of power system,
44. Phase-to-earth fault factor: Ratio of voltages in operation phase before and
after phase-to-earth fault at a certain point of the system,
45. Feeder: Line or cable outlets which transmit energy to a customer or a
customer group from a central busbar,
46. Physical notification: The active power data offered by units that are parties
to the balancing system,
47. Flicker: Voltage oscillations below 50 Hz, which occur because of
fluctuations in load and create discomfort by creating blinks in illumination armatures,
48. Flicker severity: Level of flicker voltage oscillations defined and measured
in accordance with the international standards,
49. Frequency: The number of alternating current cycles in one second in the
system (expressed in Herz),
50. Sudden voltage changes: Changes occurred in voltage after a switching
operation and after completion of temporary regime conditions and following the start of
voltage regulators and static VAR compensators and before step change settings and other
switching operations,
3
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
51.
voltage,
Voltage waveform distortion: Distortion occurred in the sinusoidal form of
52. Voltage regulator: The equipment regulating the terminal voltage of
generators,
53.
Power factor: The ratio of active power to apparent power,
54. Power system stabilizers: The equipment controlling the synchronous
generator and turbine to reduce power oscillations via voltage regulator using excitation
level, speed, frequency, power or combination of those as input variables,
55. Safety rules: Rules put in place by TEİAŞ or users to protect personnel
working on relevant plant and/or equipment from dangerous events that may occur during
the maintenance, repair, and operation of the system,
56. Harmonic: Each of sinusoidal components occurred in direct multiples of
fundamental frequency component in an alternative current or voltage distorted because of
non-linear loads or generators, whose voltage waveform is not ideal,
57. Harmonic voltage value: The effective value of harmonic components in
distorted voltage waveform,
58. Harmonic content: Distortion leading to difference between the effective
value of the waveform and effective value of the fundamental component and stating the
overall effect of harmonics in the distorted alternative current or voltage wave,
59. Harmonic limits: Harmonic limits on plant and equipment connected to
transmission and distribution system which is determined in international standards and
permitted for voltage and current in certain points on the system,
60.
Line: The facilities composed of conductors carrying electricity,
61.
Speed governor: The device regulating the turbine speed,
62. Speed governor block diagram: Diagram showing the mathematical transfer
functions of the components forming the speed governor of the unit and control units and
input and output relation between those,
63. Speed governor speed droop: The percentage of speed change of speed-load
characteristic of speed governor between full load and off-load states,
64. Speed governor gain: The ratio of change in terminal signal of speed
governor to entry speed fault signal of speed governor,
65. Speed governor deadband: Stable condition frequency range, where speed
governor does not intervene to frequency change,
66. Speed governor time constant: the constant showing the response of speed
governor to a sudden change in the entry,
67. Fast start: The ability of a unit to be synchronized and loaded up to full
capacity in five minutes following start instruction,
68. IEC Standard: Technical specifications and standards published by
International Electrotechnic Commission,
69. Warm reserve: Generation capacity created by altering the operation of units
operating as synchronous compensators to operate as generators or the available unit
capacity that can be commissioned in one to five minutes,
4
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
70. Internal demand: Total electricity consumption of facility, equipment and
other components of a plant required to be operated under normal operating conditions,
71. Bilateral Agreements: The commercial agreements between real persons or
legal entities and licensees or among licensees for the purchase and/or sale of electricity
under the provisions of private law and are not subject to Board approval,
72.
Transmission: The transport of electricity through lines higher than 36 kV,
73. Transmission Control Agreements: The bilateral agreements that are signed
under the provisions of private law between TEİAŞ and the license holding legal entities
owning or operating private direct transmission lines, and that set forth the minimum terms
and conditions for compliance of the private direct transmission lines with the transmission
system,
74.
the Law,
75.
Transmission license: The license granted to TEİAŞ as per the provisions of
Transmission system: Electricity transmission facilities and network,
76. Transmission facility: All facilities, including medium voltage feeders of
transmission switchyards, starting at the termination point of generating facilities
connected at a voltage level higher than 36 kV up to connection points of distribution
facilities,
77. Relevant legislation: The laws, regulations, communiqués, circulars and
Board decisions regarding the electricity market and the licenses of the related legal
entities,
78. Job security officer: Team chief or responsible person providing the
application of necessary security measures before any work on equipment and removal of
those measures after the completion of the work and informing the relevant load dispatch
center that the equipment can be commissioned again,
79. Insulation level: Insulation level taken as basis in the design of electrical
equipment,
80. Stable condition: The state of the system operation values of which is
accepted as constant after termination of temporary regime conditions,
81. Circuit breaker: Device used to open/close electricity circuits under loaded
or fault conditions,
82.
bus-bar,
Short-circuit power: Highest apparent power occurring in a short-circuited
83.
Short-circuit ratio: Per unit value of synchronous reactance of a unit,
84.
Cogeneration: Combined heat and power generation,
85.
Protection settings: Settings of the protection relays,
86. Protection system dependability index: In system faults, the percentage that
protection system successfully trips faulty part,
87. User: The legal entities engaged in generation and/or distribution companies
and/or wholesale companies and/or retail sale companies and/or eligible consumers,
88.
Pole slipping: Distortion of phase-angle balance in unit,
5
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
89.
Small power station: The plants with total installed capacity of 10 MW or
90.
Peak demand: Highest demand value in period of 24 hours or one year,
below,
91. Maneuver: Operations performed with circuit breakers and disconnectors to
commission or de-commission various parts of the system,
92. Maneuver form: For the RLDC maneuvers, the operation sequence form
filled by RLDC before the maneuver and communicated to relevant centers in order to
specify the maneuver sequence that switchboard personnel will follow,
93. Maneuver diagram: Diagrams schematically showing the connections of the
circuits in switchyard with related numbering and labeling,
94.
Minimum demand: The lowest demand value in period of 24 hours or one
year,
95. Negative component: In an instable electricity system, the vector of first
phase of the component with negative phase sequences among positive, negative, and null
components which states instability in current or voltage phases,
96. Negative phase sequence: In an instable electricity system, stable vector
group with three components having equal amplitudes, hundred and twenty degrees of
phase difference from each other and sequenced in different directions in order to state
instability in current or voltage phases,
97. Normal operating condition: Operating condition where voltage, frequency,
and line flows are in specified ranges, demand is met, ancillary services are provided and
operation of the system is stable,
98. Autoproducer: Any legal entity engaged in electricity generation primarily
for its own needs,
99. Autoproducer group: Any legal entity engaged in electricity generation
primarily for the needs of its partners,
100. Private direct transmission line: A transmission line which is not part of the
transmission system and constructed and operated in accordance with the provisions of the
transmission control agreement to be signed with TEİAŞ and in line with the standards
applicable for the national transmission network, providing electricity transmission
between a generation facility owned by a legal entity holding a generation, autoproducer or
autoproducer group license and its affiliates, partners and/or customers,
101. Retail: The sale of electricity to consumers,
102. Retail company: A legal entity authorized to be engaged in the import of
electricity and/or capacity, retail sales and provision of retail services to consumers, except
those that are directly connected to the transmission system,
103. Market: The electricity market consisting of the activities of generation,
transmission, distribution, retail, wholesale, retail service, sale and purchase or trade,
including import and export, of electricity and capacity, and transactions directly related to
those activities,
104. Market Financial Settlement Center: The unit under the body of TEIAŞ
that shall operate the financial system by calculating amounts payable or receivable by
legal entities operating in the market, based on differences between actual purchases and
6
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
sales as a result of the real time physical balancing of energy supply and demand by
NLDC, in accordance with the provisions of the relevant legislation,
105. Positive component: In an instable electricity system, vector of first phase of
the component having positive phase sequence among positive, negative, and null
components which states instability in current or voltage phases,
106. Positive phase sequence: In an instable electricity system, stable vector
group with three components having equal amplitudes, hundred and twenty degrees of
phase difference among each other and sequenced in same direction in order to state
instability in current or voltage phases,
107. Primary frequency control: Trying to stabilize the system frequency
through automatic increase or decrease of unit active power output via speed governor in
response to a decrease or an increase of the system frequency,
108. Reactor: Winding lagging reactive power from its connected line,
transformer or busbar and used to lower the voltage,
109. Amber alert: Warning signal sent by NLDC indicating that there is a clear
partial or complete black out risk of transmission system within the next twelve hours,
110. Secondary frequency control: Automatic increase or decrease of unit active
power output via a signal sent from NLDC in response to a decrease or an increase in the
system frequency,
111. Synchronous compensation: Reactive power generation or consumption
through adjusting the excitation currents of running synchronous machines in order to keep
the power factor in the system at desired level,
112. Synchronization: Providing the necessary conditions, connection of a unit to
transmission system or connection of two separate systems in the transmission system to
each other,
113. Non-eligible consumer: Any real person or legal entity that can purchase
electricity energy and/or capacity only from retail sale companies or from a distribution
company holding a retail sale license in its region,
114. Eligible consumer: Any real person or legal entity that has the liberty to
choose its supplier, due to its consumption of more electricity than the amount set by the
Board and/or its direct connection to the transmission system;
115. Hot reserve: Difference between total power that can be taken from the units
in the system at any time and the demand,
116. Null component reactance: Impedance values calculated to find phase-toearth and phase-to-phase earth fault currents and valid for null phase sequence currents,
117. Null component: In an instable electricity system, each of three equal vectors
of the component having null phase sequence among positive, negative, and null
components and which state instability in current or voltage phases,
118. Null phase sequence: In an instable electricity system, three equal vectors
used to state instability in current or voltage phases,
119. Black out: Unintended loss of energy of the electricity system partially or
completely,
7
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
120. Subsynchronous resonance: Oscillations below normal system frequencies
and rated system frequency occurring between the system and mechanical shaft of the
turbine-generator group,
121. Subsynchronous resonance protection: System providing protection for
generators against sub synchronous resonance,
122. Switchyard: Site containing connection components,
123. Shunt capacitor: Condenser group generating reactive power and in parallel
connection to the system,
124. Demand: Amount of active and reactive power that will be consumed,
125. Demand profile: In a certain time period, the curve showing the demand
change in the system total demand or at a certain point of the system,
126. Demand forecast: Consumption estimates prepared by TEİAŞ for a certain
time period considering demand forecasts approved by the Board,
127. Tariff: The provisions covering prices, terms and conditions related to
transmission, distribution and sale of electricity and/or capacity and related services,
128. The designed minimum output level: Active power output if system
frequency is above 50.5 Hz and unit or block does not have high frequency control
capacity,
129. Supplier: Any generation company, autoproducer or autoproducer group,
wholesale company, retail company and distribution company holding retail license,
providing electricity and/or capacity to customers,
130. Single line diagram: Single phase diagram showing the connections of
elements like busbar, conductor, power transformer and compensation equipment in a
certain part of the grid,
131. Facility: Plant and equipment installed to perform the functions of
generation, transmission or distribution of electricity,
132. Black start capability: Ability to commission at least one unit of a plant in
accordance with the instruction of TEİAŞ with its own capability and without external
feeding and to energize a part of the system in case of black out,
133. Total harmonic distortion: The ratio of square root of squares of the total of
the effective values of harmonics in the alternating current or voltage to the effective value
of the fundamental component and the value that states the distortion in the waveform,
134. Earthing: After cutting the power of plant and/or equipment via circuit
breakers and disconnectors for all directions nullifying the voltages of the conductors of
plant and/or equipment by short circuiting to earth,
135. Earth fault factor: Ratio of after fault voltage and before fault voltage of the
working phase in single phase or two phase earth faults,
136. Wholesale: The sale of electricity for resale,
137. Wholesale company: Any legal entity engaged in the wholesale, import,
export, trade and sale to eligible consumers of electricity and/or capacity,
138. Consumer: All eligible and non-eligible consumers, purchasing electricity
for their own needs,
8
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
139. Total system: All user systems including the transmission system,
140. National Load Dispatch Center: The unit under the body of TEİAŞ in
charge of real-time physical balancing of electricity demand and supply,
141. International interconnection condition: Ability to operate the national
electricity system in a parallel and synchronized manner with the electricity system of
other countries and/or ability to operate a generation facility or a unit of a generation
facility in the electricity system of another country in parallel to the national electricity
system as per the provisions of Grid Regulation and/or Distribution Regulation,
142. International standards: International design, construction, manufacturing
and performance standards prepared, approved and used for electricity system plant and/or
equipment,
143. Three phase symmetrical fault current: Fault current occurring due to short
circuit of all phases in a three phase circuit,
144. Unit: Each generating set which can load and unload independently, and, as
for combined cycle power plants, the share of each gas turbine and generator, and the
steam turbine and generator connected to the gas turbine and the generator,
145. Unit load controller: Control circuit in the speed governor controlling unit
loading,
146. Generation: The transformation of energy resources into electricity in
generation facilities,
147. Legal entities engaged in generation activity: Electricity Generation
Company (EUAS), autoproducer, autoproducer group and private sector generation
companies,
148. Generation capacity projection: An estimation of generation capacity
required for the security of electricity supply, to be prepared by TEİAŞ based on demand
forecasts provided by distribution companies,
149. Generation company: Any legal entity, except for autoproducers and
autoproducer groups, engaged in the generation of electricity and the sale of the output
generated,
150. Generation facility: Facilities generating electricity,
151. Ancillary services: Services to be provided by all legal entities connected to
the transmission and/or distribution system, as per the Grid Regulation and/or the
Distribution Regulation,
152. Ancillary services agreements: Agreements that set out the terms and
conditions, and fees reflecting the total cost of supplying ancillary services to TEİAŞ by
generation companies, distribution companies, autoproducers, autoproducer groups or
consumers connected to the transmission system as per the provisions of this Regulation
and to the holder of the relevant distribution license by generation companies,
autoproducers, autoproducer groups, distribution companies and consumers connected to
the distribution system in accordance with the Distribution Regulation. The prices to be
paid for ancillary services shall cover the total cost of supplying the related services,
153. Generation facilities based on renewable resources: The generation
facilities based on wind, solar, geothermal, wave, tide, biomass, biogas and hydrogen
energy and the river and canal type hydroelectric generation facilities without reservoirs
9
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
and hydroelectric generation facilities with reservoirs and an installed capacity of 20 MW
or below
154. Loading: The situation where a generation unit starts to provide energy to the
system or when it increases its output,
155. Deloading: The situation where a generation unit ceases to provide energy to
the system or decreases its output,
156. Loading curve: Curve showing the loading capacity of a unit as active and
reactive,
157. High frequency response: Automatic reduction of active power output of a
unit if system frequency goes above the rated frequency.
PART TWO
Connection to The Transmission System
SECTION ONE
Principles for Connection to The Transmission System and Parties
Principles for connection to the transmission system
Article 5- Connection between the transmission system and any user is built in
accordance with this Regulation and the clauses of the regulation related to security and
quality of supply.
Total installed power of a distribution busbar or a distribution system connected to
this busbar may not exceed 50 MW. If this power exceeds 50 MW, connection is made at
the transmission level. An independent feeder is not assigned for generation facilities
below 10 MW.
Connection requests are evaluated and finalized by TEİAŞ in accordance with the
related legislation and Article 7 of this Regulation within the appropriate time period.
Parties subject to connection principles
Article 6- Principles for connection to the transmission system apply to;
a) TEİAŞ,
b) Legal entities that are generating electricity and that are directly connected to
transmission system,
c) Consumers that are directly connected to transmission system,
d) Legal entities holding distribution licenses.
In addition, generation facilities that have a unit capacity of 50 MW or more or
a total installed capacity of 100MW or more on the effective date of this Regulation
are evaluated within the context of principles for connection to the transmission
system.
10
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
SECTION TWO
Connection to and/or Use of the Transmission System
Evaluation of connection request
Article 7- TEİAŞ provides the Authority with her opinion accompanied with
underlying rationale on a request for connection of generation facilities to the
transmission system and/or a request for system usage within forty five days after the
date of the written request made by the Authority in accordance with Electricity
Market License Regulation.
Other connection and/or system usage requests except those of generation
facilities made to TEİAŞ, are evaluated within forty five days following the
application date and written proposal is sent to applicant.
If a connection is made to the system, when expansion investment or new
investment is required due to inadequate capacity regarding the system usage and
when required funds are not available, the investment can be made after satisfying the
technical standards in accordance with the legislation, by a person or a legal entity
who is willing to make connection on behalf of TEİAŞ or a person or a legal entity can
finance the investment if financing terms and conditions are approved by TEİAŞ. In
that case, total expenditure regarding the investment is deducted from the user’s use of
system price, in accordance with the connection and/or system usage agreement that is
signed between the person or the legal entity and TEİAŞ.
If the connection request can not be accepted due to the provisions of Article 38
of Electricity Market License Regulation and Authority approves the proposed
rejection rationale, request is rejected and if possible, another connection point is
proposed by TEİAŞ. Authority asks the legal entity who made the application for an
opinion about this alternative connection point.
If an alternative connection point can not be proposed or the applicant legal
entity does not accept the proposed connection point, applicant legal entity may
request to build a private direct transmission line between the generation facility
within the scope of license application and partners and/or its customers. Authority
receives TEİAŞ’s opinion within thirty days. If the request is approved by the
Authority at the end of the evaluation conducted in accordance with the opinion of
TEİAŞ, the line can be established on the condition that a transmission control
agreement is signed between applicant legal entity and TEİAŞ.
If the connection point proposed by the legal entity within the scope of license
application is accepted by TEİAŞ or TEİAŞ’s alternative connection point proposal is
accepted by the legal entity, after the legal entity is awarded the license, depending on
the connection and/or system usage agreement, standard planning data and data about
the plant and/or equipment that will be connected to the transmission system which is
given in Appendix-5 First Section, is presented to TEİAŞ by the legal entity.
Connection to and/or use of system agreement
Article 8- After the standard planning data which is given in Appendix-5 First
Section and data about the plant and/or equipment that will be connected to the
transmission system is presented to TEİAŞ by the legal entity, connection to and/or
use of system agreement is proposed to the legal entity within sixty days. If TEİAŞ
11
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
needs additional information in order to propose connection to and/or use of system
agreement, detailed planning data given in Appendix-5 Second Section can be
requested from the legal entity. In these cases, the time period allowed for TEİAŞ for
proposing the connection to and/or use of system agreement is applied as ninety days.
Legal entity gives a response to TEİAŞ’s agreement proposal within thirty days.
If the parties agree on the terms, connection to and/or use of system agreement
containing the terms and conditions regarding the connection to and/or use of system
is signed. If TEİAŞ and legal entity holding the license do not agree on terms and
conditions of the connection to and/or use of system agreement, disputes are settled by
the Authority in accordance with the clauses of the Law and parties’ related licenses
and Authority’s decision on the subject is binding.
Same process is applied also for the generation facilities that are currently
connected to the transmission system and for the applications made to TEİAŞ
regarding the connection to and/or use of system by the persons and legal entities other
than generation facilities.
Compliance and tests
Article 9- The user shall notify TEİAŞ that the the user’s generation facilities
and/or plant and/or equipment connected to the transmission system are compatible
with the plant and/or equipment existing in the system, and compliant with this
Regulation, connection to and/or use of system agreements and ancillary services
agreements and where applicaple to the basic rules of the international interconnection
condition, within the framework of the following principles and procedures:
a) User prepares a draft compliance report, which includes manufacturing test
or certificates with all required technical data and parameters of plant and equipment ,
three months before the commissioning and synchronization of the unit,
b) User conducts open and loaded circuit and function tests that are parts of
commissioning test schedule conducted on automatic voltage and speed regulators,
other control and communication systems, under TEİAŞ’s supervision in accordance
with a test program and a schedule agreed upon with TEİAŞ,
c) User prepares a final compliance report which includes the results of the
tests and final settings of the control system parameters.
System connection approval
Article 10- Within thirty days after the submission of the final compliance
report to TEİAŞ, which has been prepared in accordance with connection to and/or use
of system agreement, TEİAŞ evaluates the report and informs the user whether the
requirements of the connection to and/or use of system agreement are satisfied.
If it is determined that the obligations are satisfied by the user, physical connection
date is included in the TEİAŞ’s evaluation response. If connection is not approved,
underlying rationale is explained in the evaluation response and user is permitted
additional time to complete the deficiencies and missing parts.
TEİAŞ has a right to monitor operation of the user’s plant and/or equipment
connected on the transmission system.
12
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Any request for a change on a plant and equipment on the transmission system
and/or settings of this plant and/or equipment, shall be notified to TEİAŞ allowing
adequate time to enable TEİAŞ to investigate the integrity of transmission system and the
effects on other users’ plant and/or equipment. TEİAŞ has the right to refuse changes that
might adversly impact the integrity of the transmission system.
SECTION THREE
Technical Criteria Regarding Transmission System Performance, Plant and
Equipment
System frequency and variations
Article 11- Rated frequency of the system is controlled by TEİAŞ around 50 Hertz
(Hz) between 49.8-50.2 Hz range. Since system frequency can rise up to 52.0 Hz and
decrease down to 47 Hz under exceptional circumstances, the design of the TEİAŞ and
users plant and equipment must enable operation of that plant and equipment continuously
between 47.5 and 52.0 Hz and for at least 20 seconds between 47.0 and 47.5 Hz.
System voltages and variation limits
Article 12- Rated voltages of transmission system are 380, 154 ve 66 kV.
Under normal operating conditions; a transmission system of 380 kV is operated
between 340 kV and 420 kV and a transmission system of 154 kV is operated between
140 kV and 170 kV. Voltage alteration for a transmission system of 66 kV and lower
is  % 10. In addition, distribution level in the transmission system and voltage levels
for internal consumption are 34.5, 33, 31.5, 15.8, 10.5 and 6.3 kV.
For eligible consumers and distributor license holding legal entities, basis
regarding the correction of power factor that will be applied at the connection point are
exercised in accordance with the regulation provisions related to security and quality
of supply.
When a system failure occurs, some parts of the 380 kV transmission system
can be permitted for an excessive voltage exposure of 450 kV that is determined as the
top voltage limit to activate excessive voltage protection.
Transmission system voltage wave shape quality
Article 13- Plant, equipment and connection elements connected to the
transmission system are designed in accordance with the values provided in the table
in Appendix-1 with regard to harmonic content.
Under normal operating conditions, the maximum total level of harmonic
voltage that occurs under outage conditions of a plant or equipment at a connection
point in the transmission system, can not exceed;
a) At 380 kV, maximum limit for total harmonic distortion of 2 %, with no
individual harmonic voltage exceeding the upper limits given in Appendix-1,
b) For each harmonic voltage of 154 kV and below, a total harmonic distortion
limit of 3 %, without exceeding the upper limits given in Appendix-1.
13
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
TEİAŞ may allow short duration peaks in the harmonic distortion limits given
in (a) and (b) under exceptional conditions.
In case of connection to a user’s system, it is specified in the relevant
connection agreement that the connected user must ensure that the loads causing
harmonic distortion should be within the specified limit range. When harmonic
measurement values are requested from the user, suitable equipment that can record
harmonic values for twenty four hours is installed and operated by the user. It is stated
in the connection agreement that TEİAŞ observer can join the harmonic
measurements.
Sudden voltage changes
Article 14- Sudden voltage changes in the system that result from switching
operations can not exceed ± 3 % of rated system voltage.
Sudden voltage changesthat happen as a result of shunt compensation switching
operations, can not exceed ± 5 % of rated system voltage.
Voltage fluctuations and flicker
Article 15- Related to the voltage fluctuations at a common connection point
due to the alternating load of the users who have direct connection to the transmission
system;
a) Repititive sudden changes of the voltage can not exceed 1% of the voltage
level. Larger voltage changes can be permitted up to 3 % by TEİAŞ in exceptional
cases provided that the transmission system or another user connected to the
transmission system is not put under risk.
b) A short term flicker severity of 0.85 units, a long term flicker severity of
0.63 units and for other voltage levels the values given in the table in Appendix-1 are
taken as the basis for planning limit values for fluctuating loads connected to 380 kV
and 154 kV transmission systems.
c) The position of the existing and prospective users’ plant and equipment
related to the flicker values are taken into consideration in the assessment of the
connection of the fluctuating loads to the transmission system which cause flicker
limits below those given in the table in Appendix-1, conducted by TEİAŞ.
In case of connection to a user’s system, it is specified in the relevant
connection agreement that the connected user must ensure that the flicker values do
not exceed the specified limit values. When flicker measurement values are requested
from the user, suitable equipment that can record flicker values for twenty four hours
is installed and operated by the user. It is stated in the connection agreement that
TEİAŞ observer can join the flicker measurements.
Phase imbalance
Article 16- All plant and equipment connected to the transmission system and
their parts in the switchyards should be designed to stand disturbance in wave shape
resulting from to phase imbalance.
14
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Under planned outage conditions of transmission system elements, negative
component of system phase voltage should be below 1 % of rated system voltage
under normal operating conditions.
Phase imbalances resulting from planned outages of transmission system
elements may be permitted upon TEİAŞ’s approval, provided that sum of harmonic
components does not exceed 2% such imbalances do net occur very often and they
often and they do not last long. This is stated in the connection agreement between the
parties.
Technical criteria for plant and equipment
Article 17- It is the user’s responsibility to ensure that all connected users’
plant and equipment meet acceptable technical design and operational criteria
specified by TEİAŞ and that they are consistent with the regulation related to security
and quality of the supply.
Performance of the transmission system and detailed information about the
provisions to be satisfied at the connection point are provided by TEİAŞ upon request
of the user.
The substation of a user and/or plant and equipment and materials that will be
provided in accordance with a transmission control agreement, are designed,
manufactured and tested according to the IEC Standards and to standards determined
by TEİAŞ and agreed upon by the user where IEC Standards do not exist.
When there are more than one plant and equipment of a determined capacity at
IEC standards or it is not specially mentioned, user complies with the standards
TEİAŞ determines.
The user shall ensure that the specifications of the plant and equipment at the
connection point comply with the security procedures given in the connection
agreement.
The user shall ensure that the user’s plant and equipment do not cause
interference to and is compatible with the transmission system and that they are
compatible with;
a) Insulation levels of 380 kV and 154 kV of transmission system,
b) Harmonic voltage limits determined at the connection points by TEİAŞ for
the user, and which will be determined again if required,
c) Flicker severity limits determined at the connection points by TEİAŞ for the
user, and which will be determined again if required.
Compliance of the user to clauses concerning security and quality of supply and
to this Regulation can be controlled by TEİAŞ through measurements at the
connection points when required.
Protection of the transmission system
Article 18- User prepares and submits to TEİAŞ’s approval the design related
to protection system and the methodology applied in accordance with the regulation
15
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
related to the security and quality of supply and to the provisions stated in the
connection agreement, and implements the coordinated protection settings in to
comply with the agreement.
For effective disconnection of plant and equipment from the transmission
system during the connection or, when required in accordance with the criteria set out
in the connection agreement, protection settings are made by the user under control
and coordination of TEİAŞ.
Fault clearance by TEİAŞ and the user includes time for relay operation,
opening of the circuit breaker and telecommunication signalling. Maximum fault
clearance times for 380 kV and 154 kV overhead lines are 120 and 140 milliseconds,
respectively. Fault clearance time can be 2% more than the fault clearance time that is
agreed on with TEİAŞ and the user regarding the exceptional circumstances.
Protection system dependability index related to the performance of the circuit
breakers should be at least 99 %. The faults of 1 % that can not be cleared by the main
protection system should be repaired by the back-up protection system that will be
established by the user.
Unless otherwise suggested by TEİAŞ, earth fault factor is 1.4 for 380 kV and
154 kV systems.
Opening time of a distribution feeder circuit breaker owned by TEİAŞ and
users is determined depending on short circuit endurance time of step down
transformers from tranmission to distribution and relay coordination which is in the
dispatch centers existing in the line to which the line feeder is connected.
A user can request a longer fault clearance time than the one stated in the
connection agreement for the faults in the transmission system. User’s request is
evaluated by TEİAŞ, taking the design and operation conditions of the transmission
system into consideration.
The details of the protection settings that the user and TEİAŞ agreed on are
stated in the connection agreement. Protection is carried out by the user in accordance
with the existing protection principles with regard to the operation security principles
of main interconnected transmission system.
Legal entities who operate generation facilities are responsible for installing
excitation protection system that shuts down the unit generator when unit excitation
system fails.
If required, TEİAŞ may request the fitting of pole slipping protection to the unit
after determining the necessary provisions.
If required, TEİAŞ may determine the necessary provisions for fitting of subsynchronous resonance protection to the unit. In addition, when required, TEİAŞ and
the user may agree on the installation of sub-synchronious resonance eliminating or
decreasing equipment as stated in the connection agreement between TEİAŞ and the
user.
16
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
User can work on or make a modification on the protection equipment or alter
the settings of the equipment that can affect the transmission system, only under
supervision of a technical observer from TEİAŞ.
User has to use isolators at the connection point that satisfy the “contamination
level III” as defined in IEC-815 and the minimum rated specific creepage distance of
25 mm/kV and/or other technical provisions stated in the connection agreement.
The line connecting the generation facility to the transmission system shall be
constructed by the user in accordance with the clauses of the Electricity Market
Licensing Regulation, responsibility boundaries set out in the connection agreement
and site responsibility schedule given in Appendix-3.
User obeys TEİAŞ instructions for the switching order in the switchyard
according to the short circuit power at the connection point.
For the connections to the transmission system at 380 kV and lower levels;
when a special earthing infrastructure is required, user is informed as soon as possible
by TEİAŞ about the technical criteria that should be followed for earthing and
evaluation results in case of voltage increase.
The existing standards for the three-phase symmetrical fault current switching
and withstand capability for the switchgear of the transmission system are 50 kA for
380 kV and 31.5 kA for 154 kV.
Higher voltage windings of transformers with primary side 66 kV or above
must be star connected with the star point suitable for connection to earth. At least 120
mm2 copper is used for substation primary grounding. Connections will be thermowelding connections or connections approved by TEİAŞ as detailed in the connection
agreement.
In areas with high short circuit power, neutral point of power transformers’
secondary side, is grounded via the neutral resistance or neutral reactor in order to
limit phase to earth fault currents. In addition, neutral earthing transformer is installed
in the distribution busbar for some special circumstances.
Neutral points of primary and secondary windings of 380/154 kV star-star
connected autotransformers are directly grounded and neutral points are connected to the
earthing network of switchyard. Neutral points of the primary coils of the star-triangle
transformers that connect 380 kV to distribution system are directly earthed. Secondary
coil of the same transformer is grounded via the grounding transformer. Neutral points of
the primary coils of the star-star transformers without tertiary that connect 154 kV to
distribution system are directly earthed. Secondary coil of the same transformer is earthed
via the earthing impedance.
TEİAŞ installs the low frequency relays required for automatic load shedding.
Load that will be automatically shedded from the system in case of low frequency
is determined by October 31st for the following one year, by TEİAŞ and put in effect after
the Authority is informed.
17
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
SECTION FOUR
Design and Performance Conditions of the Generation Facilities
Design and performance criteria of generation facilities
Article 19- Design and performance basis for generating units include the
technical and design criteria that the units directly connected to the transmission
system and the units connected to a user’s system should comply with.
Generating units with an installed capacity below 100 MW or 50 MW unit
capacity and generation units based on renewable energy resources that are not
designed for frequency and voltage control are not subject to these conditions.
Plant performance requirements
Article 20- Units should have the capacity to satisfy rated power output
between 0.85 power factor of overexcited operation and 0.95 power factor of
underexcited operation.
Short circuit ratio of the unit can not be less than 0.5 for thermal and combined
cycle gas turbine units, 0.75 for the hydro units with a 10 MW and lower installed
capacity and 1.0 for the hydro units with a capacity greater than 10 MW.
Units working as synchronous compensator should be able to work with zero
power factor. When thermal units work at overexcited operation, their capacity should
be able to produce reactive power upto 75% of their nominal power and when they
work at underexcited operation termic units’ capacity should be able to consume
reactive power up to 30 % of their nominal power. When hydro units work at
overexcited operation, their capacity should be able to produce reactive power upto
75% of their nominal power and when they work at underexcited operation
hydroelectric units’ cpacity should be able to consume reactive power up to 60 % of
their nominal power. These capacity values are stated in the connection agreement.
TEİAŞ can allow users to change these capacities without discrimination in
accordance with the regulation related to security and quality of supply.
Units should have the capacity to;
a) Produce constant active power output for the sytem frequency changes
within the range 50.5 to 49.5 Hz.,
b) Produce active power at a level higher than the linear characteristic values
given in Appendix 2 for system frequency changes within the range 49.5 to 47 Hz.
Under normal operating conditions, active power output of a unit that is directly
connected to the transmission system should not be affected from the voltage changes. In
this case reactive power output of the unit should be fully available within the voltage
range ± % 5 at 380, 154, 66 kV and lower voltages.
Generator control arrangements
Article 21- Every unit should contain control mechanisms that can contribute
to the frequency and voltage control by continuous modulation of active and reactive
power that is given to the connected system.
18
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Every unit should posses a proportional speed governor or unit load controller
or substitute control equipment that performs frequency control under normal
operating conditions and gives fast response. This control equipment should have a
mechanism that changes the nominal frequency setting continuously or at least within
50 ± 0.1 Hz interval with maximum steps of 0.05 Hz.
Speed governor should be designed and operated in accordance with standards
that satisfy the rules of international interconnection condition. When such standards
do not exist speed governor should be designed and operated in accordance with
European Union’s frequency control system design and modification standards.
Existing and prospective standards in the UCTE documents are taken as basis
in accordance with the targets related to integration of Turkish electric system with
UCTE system. The plants that will participate in primary and/or secondary frequency
control should comply with the provisions in these documents. If compliance with
standards in UCTE documents on primary frequency is demanded, dead band of the
speed governor should be able to be set to 0 (zero).
Standards used for the speed governors are reported to TEİAŞ;
a) At application for connection agreement, or,
b) At application for a modification in the connection agreement, or,
c) Soon as possible prior to any modification on the speed governor.
Speed governor must meet the following minimum requirements;
a) Speed governor must be able to control the active power output of the unit
to keep it constant within the operating interval in coordination with the other control
equipment,
b) Speed governor should be able to keep the frequency between 47.5 and 52.0
Hz. when the section that unit is connected is disconnected from the transmission
system as an island but the unit continues to feed the demand. However, this should
not cause the output power to go below the designed minimum output level of the unit,
c) Speed governor is set to work with a speed droop between 2% and 6% for
hydro units and 3% and 5% for the other units,
d) For units in one block, the dead band of the speed governor should be ±
0.015 Hz, except for the steam unit. For the steam unit, dead band of the speed
governor is determined in accordance with the frequency interval given in part (b) and
frequency control conditions stated in the balancing rules.
Minimum requirements determined for the speed governor should not affect the
negotiations between TEİAŞ and the user about the necessary commercial ancillary
services that depend on other parameters.
Equipment to receive and process the signals from NLDC automatic generation
control system shall be installed by the user in accordance with provisions in the
connection agreement, on to the units selected by TEİAŞ for secondary frequency control
within the scope of ancillary services agreement.
19
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
All units should satisfy the profile of minimum frequency control requirement
stated in Appendix 4. Generation facilities based on renewable energy resources and
cogeneration facilities with a total efficiency of the facility is higher than 70 % which are
restricted to regional heating and heat and steam provision commitments to the clients are
exception to this minimum frequency control requirement.
Related to the automatic excitation control system that keeps the unit’s voltage
constant and voltage regulator;
a) Detailed technical information for warning control equipment and power
system stabilizers are stated in the connection agreement,
b) Reactive power limiters that limit the reactive power output of the unit in
accordance with the system stability and excitation current limits in the operating
interval, are installed and set as specified in the connection agreement,
c) Related to the voltage control, other control facilities including the constant
reactive power output control modes and constant power factor modes, are stated in
the connection agreement. However, if this facility is already present in the excitation
control system, it can be put out of use depending on TEİAŞ’s request,
d) When the power of the unit is increased slowly from zero to full load,
excitation control system should be accurate enough to make sure that the deviation in
the output voltage does not exceed 0.5 % of the predetermined nominal value,
e) If the unit is exposed to a drastic voltage change, the excitation control
system whose output is controlled by the automatic voltage regulator, should be able
to reach lower and upper voltage limits of the generator warning winding in no longer
than 50 miliseconds,
f) If a sudden voltage change of 10 % or greater occurs in the unit output,
excitation control system should be able to provide upper limit value of loaded
positive excitation voltage and at the same time negative upper voltage limit value
equal to 80 % of positive upper voltage limit. This value should not be less than twice
of nominal excitation voltage and 6-7 times the unloaded (no-load) excitation voltage
that is stated in the connection agreement,
g) Excitation system for the static excitation sources that derive excitation
power from the unit output with the help of a power transformer should be able to
automaticly trigger, if unit output voltage drops to 20 -30 % of its nominal value,
h) Unit should have a power system stabilizer that can provide electrical
damping power in the automatic voltage regulator in case of low frequency
electromechanical oscillations of 0-5 Hz. that can occur in the system. TEİAŞ and
user, together, make the settings of the power system stabilizer.
Steady state output power variations
Article 22- At steady state, standard deviation in the unit output power within
half an hour time should not exceed 2.5 % of the installed capacity of the unit.
Negative component loadings
Article 23- Negative component of voltage in 380 kV and 154 kV system,
should not exceed 1 % of positive component. Units should be able to withstand
without tripping the negative component loadings that happen due to phase-phase
20
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
faults in the transmission or user’s system or instable loads, until the clearance of the
system by the reserve protection.
Earthing of the neutral points of unit transformer amd generators
Article 24- Neutral points of the transformer windings that are on the side of
the transmission system are earthed directly. In the generation dense regions, in order
to limit the single phase earth fault current in the 154 kV system, neutral point of the
windings coil that is on the side of the transmission system is completely isolated.
Neutral point of the generators should be earthed over the resistance. Generator
earthing resistance, is determined and established in accordance with the provision that
rezisting and reactive components of phase earth fault current are equal. Neutral points
of the generators should not be isolated completely and should not be earthed directly
or over the reactance.
Unit frequency accuracy
Article 25- Legal entity which is involved in generation activity, is responsible
for protecting its units against the harms that can occur due to frequencies out of 47-52
Hz range. Legal entity is responsible for cutting the connection between the
equipment, unit and the system and taking all of the preventive actions for the security
of the facility and/or personnel when the frequency is outside this range.
The provisions about these units with fast-start capability are stated in the
connection agreement. Units having this capability can be used for operating reserve and
can be initiated by frequency relays at a preset frequency in 49-52 Hz. range.
SECTION FIVE
Communication Conditions
Communication
Article 26- Technical properties, installation and operation and maintenance
responsibilities for the communication and control system that is established for
management, operation and control of the communication system between TEİAŞ and
the users are stated in the connection agreements.
Voice communication system
Article 27- Voice communication system is a special communication system
between TEİAŞ and control operator of the user that is used for controlling, operating
and monitoring the system over a number of communication platforms.
The voice communication between load dispatch and system operation centers and
user facilities, is provided by installation of appropriate software and hardware compatible
with TEİAŞ’s existing communication facilities by the user. User are responsible for
making the required technical changes and modifications that are stated in the connection
agreement in the other associated centers.
In order to satisfy effeciency in management, operation and controlling of the
communication system, a telephone provided by a public telephone network operator shall
be placed in the related control room of the user in accordance with the connection
agreement.
21
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
In addition to the telephone line that is connected to the international line, a fax
machine using a separate line is kept in the control centers of TEİAŞ and distribution
companies, control room of the generation facilities, the control points of the directly
connected consumers and at points where commercial transactions are carried out.
Telephone and fax numbers and the changes that will be made in these numbers
are reported to TEİAŞ and/or distribution companies before the communication plant
and/or equipment are connected to the system.
Protection signalling system
Article 28- The required hardware for the communication of protection signals
relating to connection system between the transmission system and the user’s system
shall be installed by the user.
Data communication system
Article 29- Data communication system is where data from user’s system is
gathered, processed, evaluated, transmitted to the related load dispatch center and
where the required information and instructions are transmitted to the user’s facility
from the related dispatch center.
Remote terminal unit, hardware, software, communication link and equipment
required for system control and data collection activities are installed in user’s and
TEİAŞ’s related facilities in accordance with the conditions stated in the connection
agreement. User connects the required control inputs for TEİAŞ such as signal,
indicator, alarm, measurements, circuit breaker, disconnector to the system control and
data collection equipment over an information collection panel which will be installed
adjacent to the equipment.
If user prefers computer control system which is an integral part of the facility
instead of remote terminal unit for data communication; and his preference is accepted
by TEİAŞ, suitable system for the required performance is provided by the user.
Data communication between user and TEİAŞ control and system operation
centers is established in compliance with the NLDC rules stated in the connection
agreement, communication protocol and communication medium.
Data communication is accomplished utilizing at least two separate links one of
which is main and the other back-up link.
Data communication network
Article 30- The data communication network and technical infrastructure of
this network which will be used between TEİAŞ and the user for administrative,
financial and commercial information exchange and for balancing and settlement
activities are established in accordance with standards and rules prepared by TEİAŞ
under Authority’s coordination.
Additional communication requirements
Article 31- The requirements for modifications and adjustments in the user’s
existing voice and data communication system for the purpose of reinforcement,
development and renovation of the transmission system shell be provided by the user.
22
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Secondary frequency control equipment
Aricle 32 - Equipment and related connection required for secondary frequency
control are provided and installed by the user. Connection data to be transmitted to
NLDC and required data for adjustment of control parameters at RLDC are provided
by the user.
System and interface required for the secondary frequency control, should be
compatible with the signal sent from the automatic frequency control software in the
NLDC.
Signals to be received from the units to monitor transmission system
Article 33- User is informed by TEİAŞ about the voltage, current, active and
reactive power and other signals that will be received from the units in order to
monitor transmission system and these signals are provided by the user in order to
transmit to the related center of TEİAŞ. When, where and how the related equipment
for the transmission of these signals will be established and how the related costs will
be paid are determined in accordance with the provisions of the connection agreement.
SECTION THREE
Planning
PART ONE
Principles of Planning and Related Parties
Principles of Planning
Article 34- TEİAŞ is the responsible party for preparing the capacity projection
for a minimum period of ten years based on demand forecast prepared by the
distribution companies, finalized by TEİAŞ and approved by the Board.
By taking into account the economical aspects of opportunities related to the
connection to and/or use of the transmission system according to the capacity
projections, TEİAŞ is responsible of preparing the transmission system ten year
progress report, for the purpose of determining the most suitable regions for energy
transmission and providing guidance to investors. Preparation of this statement and the
investment plan in accordance with the revenue arrangements performed by the
Authority, and publishing of the statement upon approval of the Board are also
performed by TEİAŞ.
The transmission system ten year progress report and the generation capacity
projections are yearly submitted to the Board for approval so it can be published on
October 31.
Besides planning of the transmission system, TEİAŞ is also responsible of
performing operations related to the existing and proposed connections and identifying
and acquiring necessary information from parties subject to planning in order to
prepare capacity projections.
Parties subject to planning
Article 35- Principles of planning concerning the transmission system
development are applied to;
23
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
a) TEİAŞ,
b) Legal entities engaged in generation,
c) Distribution companies.
Responsibilities of parties subject to planning
Article 36- Detailed and standard planning data, included in the attachment 5,
that covers the 10 year period following the current year is provided to TEİAŞ by the
parties subject to planning by March 31 of the current year.
Where there is no change in the data with respect to the previous year, TEİAŞ
is informed by the user in writing of the condition that there is no change in the data
between the current and the previous year.
For new applications regarding connection to and/or use of system, standard
planning data is presented to TEİAŞ.
PART TWO
Generation Capacity Projection and Transmission System Ten Year
Statement Report
Generation capacity projection
Article 37- TEİAŞ is responsible of preparing the generation capacity
projection that covers projection for minimum ten year period, based on the demand
forecast that is prepared by the distribution companies, finalised by TEİAŞ and
approved by the Board, in order to maintain the quality, continuity and reliability of
electricity suply and also to lead the market participants.
Generation capacity projection includes the demand development for the
following ten year period, generation, regional demand supply balance, transmission
system and transmission system perfromance sections.
Demand development section includes the following items;
a) Demand and loss forecasts prepared by the distribution companies,
b) Sectoral demand development,
c) Analysis regarding the comparisons between the physical realization and
the demand forecasts of the previous year,
d) The internal consumption amount that generation facilities operating in the
distiribution region utilized from the system in the previous year,
e) Peak demand information for the previous year along with the main factors
affecting the demand.
Generation section includes the following items;
a) Total installed capacity in Turkey in the previous year,
b) Generation capacity amounts as per energy resource type of the generation
facilities connected with the transmission and distribution systems,
24
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
c) Yearly capacity increases necessary for the reliable fulfillment of demand,
d) Capacities of the generation facilities that have been licensed but not yet
commissioned,
e) Imported and exported energy amounts in the previous year,
f) Production facilities that have been put out of operations in the previous year
and their production capacities,
g) Production amount of the units that are expected to be non-operational for
longer than a year and the duration of non-operation.
Regional demand and supply balance section includes the following items;
a) Regional demand supply balance,
b) Recommendations regarding precautions that could be taken in order to
ensure security and quality of supply in case of delays in the registered completion
dates of the facilities for which licenses have been obtained but not commissioned yet.
Transmission system ten year statement report
Article 38- Transmission system ten year statement report has the objectives of
putting forth the opportunities of connection to and/or use of the transmission system,
together with their economical aspects, identification of the most suitable regions for
electric energy transmission and also leading the new market participants.
The transmission system ten year statement report includes the following items;
a) Basic parameters of the transmission system as of the end of the last year,
b) Regional characteristics of the transmission system,
c) Evaluation of the current performance of the transmission system,
d) Improvements planned on a yearly basis,
e) Investment plans of the transmission system,
f) Regional transmission tariffs.
PART THREE
Planning Data
Data to be prepared
Article 39- Planning data, as it is in the attachment-5 consists of two types;
standard and detailed.
Standard planning data is prepared periodically by the users while the detailed
planning data is prepared upon TEİAŞ’s request.
Planning data follows the following levels according to the development phases
of the project;
a) Preliminary project data,
b) Committed project data,
25
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
c) Contracted project data.
Preliminary project data
Article 40- Information and documents concerning the user’s connection to
and/or use of the transmission system are accepted to be project preliminary data until
connection and/or use of system agreement is signed. Data at this level is confidential
and cannot be disclosed to third parties by TEİAŞ until further levels have been
reached.
Under normal conditions, project preliminary data only consists of standard
planning data. Detailed planning data is also included in the preliminary project data in
order to perform more detailed transmission system analysis where requested by
TEİAŞ.
Committed project data
Article 41- Additional data requested by TEİAŞ along with data that has been
submitted as project preliminary data following the signing of the connection to and/or
use of system agreement are accepted as committed project data. This data along with
other data belonging to TEİAŞ are utilized to evaluate new applications, to prepare
generation capacity projection and transmission system statement reports and also to
plan investments.
Committed project data consists of standard and detailed planning data.
Committed project data cannot be disclosed to third parties except under the
following circumstances:
a) In the preparation of the generation capacity projection and transmission
system development reports,
b) Operational planning purposes,
c) International interconnection works.
Contracted project data
Article 42- Contracted project data can be exchanged with validated actual data
before connection to the transmission system is realized. Similarly, future data can be
exchanged with updated forecast data by taking into account demand as well. Data
provided at this phase will form the basis for the contracts and agreements between
parties.
Contracted project data, along with other other data of TEİAŞ, will form the basis
for evaluating new applications and transmission system planning.
Contracted project data consists of standard and detailed planning data.
Contracted project data cannot be disclosed to third parties except under the
following circumstances:
a) In the preparation of the generation capacity projection and transmission
system development reports,
b) Operational planning purposes,
26
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
c) International interconnection works.
PART FOUR
Planning Criteria
Planning Criteria
Article 43- TEİAŞ plans and develops the transmission system in accordance
with the provisions set out in the transmission license. Users take into account
TEİAŞ’s views and practices in planning and improvement works concerning their
own generation facility and/or network.
Transmission system development plan that is prepared by TEİAŞ based on
regulation clauses concerning security and quality of supply comes into effect
following the approval of the Board. TEİAŞ publishes generation capacity projection
and production safety criteria that is taken as a basis in the preparation of transmission
system development plan. This criteria includes calculations of the probability of not
meeting the peak demand, based on finalized generation capacity projection.
Probability of not meeting the demand should be equal to or less than 2 % per
annum, which indicates not meeting the peak load for a total period of seven days in a
year. TEİAŞ includes its views in the annual connection opportunities report in order
to reach annual generation capacity projection targets.
SECTION FOUR
Operating Rules
PART ONE
Principles of Demand and Energy Forecast and Related Parties
Principles of demand and energy forecast
Article 44- Demand and energy forecast is performed daily by meeting the
criteria concerning system integrity, security and quality of supply and also with
information obtained from parties subject to Balancing and Settlement Regulation and
in accordance with the system constraints and bids and offers.
Demand and energy forecasts are taken as a basis in the studies concerning the
transmission system, in the planned maintenance of generation, transmission and
distribution facilities, and in the coordination of outages of the generation facilities.
Parties subject to demand and energy forecast
Article 45- Principles of demand and energy forecast are applicable to;
a) TEİAŞ,
b) Distribution companies,
c) Legal entities that operate as generators,
d) Eligible consumers that are directly connected to transmission system.
27
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Responsibilities of parties
Article 46- Distribution companies inform TEİAŞ in writing by April 30 for
the year following the current one (year 1) of their monthly demand forecast in GWh
and weekly minimum and maximum demand forecast in MW and MVAr, and for the
year following the next year (year 2) monthly demand forecast in GWh and monthly
minimum and maximum demand forecast in MW and MVAr.
Distribution companies inform TEİAŞ in writing within thirty days in case
there is a deviation of more than 5 % in the forecasts submitted to TEİAŞ previously.
Daily demand forecasts in MW and MVAr of connection points on hourly basis
should be submitted to TEİAŞ in written until 10.00 of the previous day by distribution
companies and eligible consumers that are connected to transmission systems and by legal
entities that obtain energy from international interconnection.
Production programs of the generation facilities connected to distribution
network are taken into consideration in the demand and energy forecasts presented to
TEİAŞ by the distribution company.
In case of discrepancies between demand and energy forecasts provided by
users and TEİAŞ’s own forecasts, relevant user’s opinion is asked and final demand
forecast is composed by TEİAŞ.
Demand and energy forecasts of the users directly connected to the generation
facility are presented to TEİAŞ by the generating legal entity to which such users are
connected.
PART TWO
Operational Planning
Principles of operational planning
Article 47- Operational planning involves coordination by TEİAŞ of the
outages for maintenance, repair and construction of plant and equipment in accordance
with the demand and energy forecast.
TEİAŞ performs operational planning through coordinating the planned outage
programs of the units subject to balancing system and transmission system plant and
equipment in order to minimize outages that would adversly affect the system and to
maintain continuous and reliable fulfillment of demand.
Operational planning includes the following situations that involve planned outage
of the units that are subject to the balancing system, transmission or distribution system
plant and equipment;
a) Situations that adversly affect the availability of units that are subject to the
balancing system,
b) Situations where the availability of a unit subject to the balancing system
decreases because of any problem with the generation services including a problem in
the provision of fuel,
28
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
c) Situations that adversly affect the availability of a standby power plant
within normal modes of operation,
d) Situations which constrain units subject to balancing system from supplying
of energy to the transmission system.
Parties subject to operational planning
Article 48- Principles of operational planning are applicable to;
a) TEİAŞ,
b) Distribution companies,
c) Legal entities directly connected to the transmission system that operate as
generators,
d) Eligible consumers that are directly connected to the transmission system.
Principles of programmed outages
Article 49- All users should submit their requests for outages of their plant and
equipment for Year 1 and Year 2 to TEİAŞ by 30 April of the current year. The
information submitted to TEİAŞ must apply to each generating unit and include
weekly availability for Years 1 and 2. This notification includes also the availabilities
of the units. These requests are included also in the plan which will be prepared by
TEİAŞ.
TEİAŞ shall conduct an analysis of plant margins for Year 1 taking into
account transmission system constraints by 31 May every year. TEİAŞ shall on the
basis of this analysis prepare the first draft of the annual plan and suggest changes (if
any) to the users in writing. Users have until 31st of July, to notify TEİAŞ of any
objections to suggestions concerning changes and they shall notify TEİAŞ their
alternative suggestions regarding their objections by August 31st.
TEİAŞ prepares the first draft of the annual report by 30 September after
negotiations with users on suggested changes and notifies any changes to users whose
outage programms are revised.
The annual plan prepared for Year 1 is finalised by 31 September. This
information regarding the outages of plants subject to balancing system will be treated
as commercially sensitive and confidential by TEİAŞ.
Once a maintenance outage is approved by TEİAŞ it can only be changed;
a) by notice from TEİAŞ prior to the commencement of the outage, for
reasons of security of supply or security of the power system or safety of user’s staff
or public safety,
b) by TEİAŞ’s approval following a request by the user for reasons of security
of supply or economics of operation,
c) by agreement between TEİAŞ and a User where only that user is affected
by the proposed changes.
29
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Outage planning procedures for the current year
Article 50- Outage planning procedures for the current year are prepared based
on;
a) By 1100 hrs each business day, each generating legal entity shall notify
TEİAŞ in writing the forecast return to service of any of their units under planned
outage, unplanned outage, forced outage or breakdown for the period from Day 2
ahead to Day 14 ahead and each distribution company shall notify TEİAŞ in writing
with corresponding information relating to its distribution system.
b) Between 1100 hrs to 1600 hrs each business day, TEİAŞ shall analyse the
upper and lower limits of actual generation capacity, taking account both the
transmission and the distribution systems’ planned outages, transmission and
distribution constraints and including a reasonable contingency allowance for
generating unit breakdowns.
c) By 1600 hrs each business day, TEİAŞ shall advise each generating legal
entity and each distribution company in writing if the availabilities will lead to plant
margin shortfalls for the period from Day 2 ahead to Day 14 ahead.
d) By 1600 hrs each Wednesday; each generating legal entity shall notify
TEİAŞ in writing any update to the final annual plan for Year 1 and include an
estimate of the availability of each unit for the second week following the current
week to Week 52 ahead, and each distribution company shall notify TEİAŞ in writing
with any update to the final annual plan for Year 1.
e) Between 1600 hrs each Wednesday to 1700 hrs each Friday, TEİAŞ shall
establish the upper and lower limits of actual generation capacity taking account both
the planned outages and the system constraints of the transmission system and the
distribution systems and including a reasonable contingency allowance for generating
unit losses.
f) By 1700 hrs each Friday, TEİAŞ shall advise generating and distributing
legal entities in writing the adequacy of plant margins for the period from the
following week to week 52 ahead.
Short term planned outages
Article 51- Short term planned outages are scheduled outages which were not
notified in the annual plan, but agreed on and have a planned start time and duration.
For outages of less than eight hours the notification period should be not less
than twenty-four hours notice.
For outages from eight hours duration up to forty-eight hours duration the
notification period should be not less than seven calendar days notice.
Notified unplanned outages
Article 52- Where due to unavoidable circumstances of his plant and
equipment, a user needs to arrange an outage, then the user must include in his written
notification to TEİAŞ:
a) Full details of all plant and/or equipment affected including any restrictions
in availability,
b) The expected date and start time of the unplanned outage,
30
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
c) The estimated return to service time and date, of the plant and/or equipment
affected and the time and date of the removal of any temporary capacity restrictions,
d) Details of any restrictions, or risk of trip, on other plant and equipment
caused by the unplanned outage.
TEİAŞ may request the user to advance or defer an unplanned outage where in the
opinion of TEİAŞ the unplanned outage would adversely affect the security of the power
system. If the user agrees to this alteration then it will send written confirmation to TEİAŞ
of the new suggestion regarding the unplanned outage dates.
Forced outages
Article 53- In the event that there is a forced outage, or a decrease in capacity,
or disconnection from the transmission or distribution system or there are transmission
constraints related to a plant or equipment which is a party to the balancing system
without the prior agreement of TEİAŞ, then the user shall immediately notify TEİAŞ
of the event.
The user must provide its best estimate of the likely duration of the forced
outage of his plant and equipment and such reasonable data as TEİAŞ requires.
Information regarding the outage shall be notified to TEİAŞ as soon as practicable as
they get more clear.
Data requirements
Article 54- Each legal entity that is a party to the balancing system, shall notify
to TEİAŞ by 31 March in each calendar year data relating to their units such as; any
changes to the operating characteristics as detailed in the data registration schedules
and/or power purchase agreement with respect to the previous year, the technical
specifications of the unit transformer and the unit loading curve (according to
Appendix-6) and the unit planning parameters (according to Appendix-7).
PART THREE
Operating Margin Planning
Principles of Operating Margin Planning
Article 55- During system operation, TEİAŞ plans the adequate generation
capacity which make up operating margin to comply with the regulations relating to
security and quality of supply.
Operating margins set out for system operation are utilised for the purpose of
balancing supply and demand in the system.
Parties subject to generation margin planning
Article 56- Generation margin planning principles apply to;
a) TEİAŞ,
b) TETAŞ,
c) Legal entities that operate as generators,
d) Distribution companies.
31
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Operating margin
Article 57- The two types of operating margin are; standby reserve and
operating reserve:
a) Standby reserve is the margin of generation over forecast demand taken
across a 24 hour period starting from real time. Standby reserve is intended to be
utilised in conditions where the consumption exceeds the demand forecasts due to
conditions that can not be foreseen like the uncertainties plant availabilities and
unexpected weather conditions. This reserve is provided by units that are not required
to be synchronised but which are held on standby and available to be instructed to
synchronise within a defined timescale, as specified in the provisions of this regulation
related to balancing.
b) Operating reserve is that additional output available from units in service
and/or units that can return to service in a short time and/or a reserve caused by a
reduction in demand, in order to contribute to stabilising and correcting frequency
deviations and to ensure system stability.
The operating reserve is considered across three time zones;
a) The ten second response or primary reserve; A unit’s automatic response to
reach the determined load within 10 seconds from the time of frequency change, and
sustain this response against the decrease in frequency via automatic load control, for up to
30 seconds,
b) The thirty second response or secondary reserve; A unit’s automatic response
following the ten second response to reach the determined load over the 20 second period
from 10 to 30 seconds from the time of frequency change and to sustain this response
against the decrease in frequency via automatic load control capability for up to five
minutes,
c) The five minute response or fast start reserve; A unit’s response to reach the
determined load by using additional capacity according to the provisions of this
regulation regarding balancing with the instruction of NLDC or within 5 minutes from
the time of a frequency change, but excludes the first 10 second and 30 second
responses of a unit in service, and/or full availability within 5 minutes of gas turbines
or hydros that are not already sychronised but held in fast start,
d) Demand managment or load shedding; is the automatic disconnection of predetermined consumers low frequency relays when system frequency decreases to a
certain level to ensure decrease in the demands of consumers for the purpose of
preventing the decrease in system frequency.
Criteria for standby reserve
Article 58- Standby reserve is determined everyday on a daily basis for the
following 7 day period. This reserve will be decided by TEİAŞ on the basis of the
availability of units, demand forecasts and the accuracy of the forecast demand to
actual demand.
Where standby reserve is to be held on a balancing mechanism unit or block,
TEİAŞ will issue an instuction to hold standby reserve to the generator which will include
the length of time to synchronise to the power system. The time to synchronise will be
32
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
consistent with the relevant contracted project data as registered in the planning or
balancing instructions issued under this regulation.
Criteria for operating reserve
Article 59- The amount of operating reserve required will be determined by
TEİAŞ having regard to the demand levels, unit availability shortfalls and the
allowance of the loss of the largest loaded unit or block.
Where the power system can become islanded due to failure, then operating reserve
will also need to be allocated for this possibility within the framework of the technical
capabilities to meet the requirements of each island. Until sufficient standby reserve units
can be synchronised, loaded and connected to the other parts of the system to stabilise each
islanded power system, demand side management measures are applied by TEİAŞ to
maintain system frequency within acceptable limits.
Data requirements
Article 60- The response capability data required for each balancing system
unit’s operating reserve characteristics consist of;
a) Primary response to frequency change data which describes the unit’s
response at different levels of load from minimum generation to normal full load;
b) Governor droop characteristics expressed as a percentage of frequency
drop,
c) Unit control options for maximum droop, normal droop and minimum
droop, each expressed as a percentage of frequency drop.
These data will be registered by generating legal entities and will also be notified to
TEİAŞ under this regulation.
PART FOUR
Demand Control
Principles of demand control
Article 61- When there is insufficient available generating capacity to maintain
the system frequency within the levels defined in article 11, TEİAŞ and users follow
the demand control procedures below to reduce demand:
a) Demand control carried out by TEİAŞ and/or users according to the
agreement,
b) Reduction of the transmission system voltage by TEİAŞ,
c) Planned manual disconnection or emergency manual disconnection of load
initiated by TEİAŞ,
d) Disconnection of load by automatic relays to preserve security and quality
of supply in the transmission system.
TEİAŞ implements demand control as the last option for the purpose of preserving
the security and quality of supply in the transmission system and without any
discrimination.
33
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Parties subject to demand control
Article 62- Demand control principles apply to;
a) TEİAŞ,
b) Distribution companies,
c) Eligible consumers directly connected to the transmission system.
User managed demand control
Article 63- Users can manage their own demand control under an agreement
with TEİAŞ. TEİAŞ does not perform any demand control activity for such users.
Disconnection of demand by under-frequency relay
Article 64- Demand may be automatically disconnected, in the event of a fall
in frequency to the values determined before, by means of an under-frequency relay.
With regular intervals during the year, TEİAŞ performs rotations without any
discrimination for frequency levels determined as 49.0, 48.8, 48.6, 48.4 Hz in the
system.
Disconnection of demand by under-frequency relay is performed for the purpose of
eliminating a short-term supply-demand imbalance.
Planned rotational load shedding
Article 65- In the event of a sustained period of shortfall in the generation
capacity-demand balance, either for the system as a whole or for significant parts of
the system, then the available power is shared among the customers equitably. This
will involve a rotational load shedding programme where customers’ demand are
disconnected.
Emergency manual load shedding
Article 66- In the event of an unexpected shortfall in the supply-demand
balance or transmission constraints for the system as a whole, or for particular parts of
the system, load may be shed manually in order to avoid more widespread load
shedding or sustained operation at unacceptably low voltage or frequency levels. This
load shedding will be implemented under a programme prepared by TEİAŞ in
advance.
Notification of procedures for demand control
Article 67- TEİAŞ, after consultation with users, will prepare demand control
procedures. These will consider various scenarios that would require the use of
demand control, to maintain the integrity of the power system.
These demand control procedures are to consist of two parts, namely system
warnings and demand control. TEİAŞ shall have the ability to amend these procedures
when necessary, subject to Authority’s approval.
34
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
System warnings sent to users by TEİAŞ consist of:
a) Warning of inadequate system margin when the margin of generation is
inadequate is sent to all users of the transmission system, including generating legal
entities,
b) To provide notice, where possible, only to those users who are likely to
receive demand reduction instructions from TEİAŞ at short notice
c) Cancellation of demand reduction imminent to all Users who were sent the
original demand reduction imminent warning when the possibility of users’ demand
reduction has passed.
Demand can be reduced also by reducing the system voltage where agreed by
the distribution company without any need for demand disconnection.
Demand control shall be implemented in a number of ways, which include;
a) Selective demand reduction by distribution companies or any directly
connected customer at the instruction of TEİAŞ,
b) In the event of an unexpected shortfall in generation for the entire system,
demand reduction shall be instructed by TEİAŞ to avoid sustained operation at
unacceptably low frequency or voltage,
c) Under conditions of low frequency, demand shall be automatically shed by
operation of under-frequency relays.
The demand control procedures will be circulated to all users for comment and
where agreement is achieved, for implementation. Where agreement cannot be
achieved with a particular user, TEİAŞ will act in line with the comments given by the
Authority.
PART FIVE
Operational Communication and Liaison
Principles of operational communication
Article 68- Operational communication covers the principles regarding the
two-way reliable communication system to be established between TEİAŞ and users.
Parties subject to operational communication
Article 69- Principles of operational communication apply to;
a) TEİAŞ,
b) TETAŞ,
c) Legal entities directly connected to the transmission system that operate as
generators,
d) Distribution companies,
e) Eligible customers that are directly connected to the transmission system.
35
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Notification operations and events
Article 70- TEİAŞ and users shall inform to each other regarding the
operational activities and events in accordance with the procedures and methods
below.
In the case of a planned operation by TEİAŞ regarding system operation, which
will lead to a change in the operations of a user’s generation facility or network,
TEİAŞ will notify the user via NLDC or RLDC within the shortest possible period.
In the case of a planned operation performed by a user on a user network or
user generation facility which will lead to a change in the operations of the
transmission system, the user will notify TEİAŞ. TEİAŞ will notify other users who
will be affected by this operational effect.
A notification under conditions above must contain sufficient detail regarding
the associated possible risks and their implications. These notifications must be given
as far in advance as possible to allow the recipient time to assess the risk and deal with
any matters arising.
Where there is not enough time for a written notification for unplanned events
in the system like fault or erroneous operation caused by personnel or malfunctioning
of equipment and/or control equipment or events that cause deviations from the normal
operating conditions, then oral communications can be performed within 30 minutes
following the occurance of the event. A written confirmation by fax, e-mail or letter is
required afterwards to confirm the oral agreement.
Requirement to notify significant incidents
Article 71- A significant incident includes; system voltage and frequency
outside normal operating limits, transmission system instability, overloading of plant
and equipment and danger to persons and/or public as a result of these.
When in the opinion of TEİAŞ, the event notified by the user to TEİAŞ is
found to have a significant effect on the transmission system, TEİAŞ may request a
written significant incident report from the user. This report is prepared in the first
business day following the request according to Appendix-11 and sent to TEİAŞ.
TEİAŞ may, when deemed necessary, require a significant incident report,
concerning any event, from users.
Warnings
Article 72- A warning will be sent by TEİAŞ, usually by telephone, fax or email, to users who may be adversely affected by significant incidents in the
transmission system. This warning will indicate the likely reason for the disturbance,
the impact on the system, and duration of the disturbance.
36
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
PART SIX
Access and Work Safety
Access
Article 73- Provisions regarding the access to sites that are owned by or under
the responsibility of Users or TEİAŞ are stated in the connection agreement signed by
TEİAŞ and the User.
Principles of work safety
Article 74- Principles of work safety specify the procedures for the
establishment and coordination of essential safety precautions when one or more than
one party is involved in the work to be done on plant and/or equipment.
Parties subject to work safety
Article 75- Principles of work safety apply to;
a) TEİAŞ,
b) Distribution companies,
c) Legal entities operating as generators that are directly connected to
transmission system,
d) Eligible consumers that are directly connected to the transmission system.
Safety measures
Article 76- Each party must approve the other party’s safety rules in relation to
isolation and earthing prior to any work commencing. Safety rules are maintained until
the parties confirm the termination of their work to each other. Where there is a change
in safety precautions to either user, the change is confirmed by each of the users and
the safety precautions are re-approved.
Authorised persons that can request work permit
Article 77- TEİAŞ and the user shall produce a list of names of all personnel
who can request work permit. TEİAŞ and the user exchange the lists of authorised
persons. The new list will be confirmed by both parties when there is a change to the
list.
Request for work permit
Article 78- In order that safety precautions can be taken for work to be carried out
on plant and/or equipment that connects more than one transmission system or center by a
common connection point, the user to perform the work will send the work permit request
to the relevant load dispatch center not later than one week prior to the commencement of
work by filling in the form given in Appendix-8.
Approval for work permit is granted following the acceptance of the work
permit request by the related load dispatch center. The approved work permit request
can be cancelled only by approval from the relevant load dispatch center. The forms
given in Appendix-9 are filled out for applications regarding request for approval of
work permit and cancellation of approved permit.
37
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Commencement of work
Article 79- Coordination of the switchout, isolation and earthing processes of
the plant or equipment shall be carried out by the respective control centres of the two
parties involved. The form given in Appendix-10 is filled out by the load dispatch
center for isolation maneuvers and the maneuvers are performed according to this
form.
Agreement on safety precautions to be established and the adequacy of those
precautions shall be reached by both parties before any work commences. This
agreement shall be recorded in writing at both parties’ control locations.
Before work begins, the safety precautions agreed in advance shall be
established by both parties. All isolation points identified in the form with number,
nomenclature and position shall be locked and warning notices applied. Completion of
this procedure shall be recorded in the safety log at the respective location and
confirmed to the other party.
Following the establishment of isolation at all points of infeed, actions to apply
agreed earthing may commence. The precise identity of every earth applied shall be
checked by the number, nomenclature and position.
All fixed earths shall be locked in the closed position and a warning notice
applied. Completion of earthing shall be recorded in the safety log at the respective
location and confirmed to the other party. Only when all isolation and all earthing as
previously agreed between the two parties has been completed may a work permit be
written out.
It is the responsibility of the work safety officer named on the work permit to
ensure that safety precautions written on the work permit are maintained and not
removed until cancellation of work permit or termination of work. Safety precautions
may be removed only when work is completed or work permit is cancelled.
Completion of work
Article 80- When the work has been completed the respective load dispatch
center is informed by the work safety officer that the earthing and isolation on his
system is no longer required and may be removed. This process regarding the return to
service of the plant and/or equipment shall be coordinated by the respective load
dispatch/control centres of the two parties.
Safety logs
Article 81- TEİAŞ and the user, shall maintain at every operational site, a
safety log, which shall be a chronological record of all sent and received messages
relating to safety at that site. All safety logs shall be retained for at least one year.
Responsibilities regarding safety, training and environment
Article 82- The party performing work on plant and/equipment that is owned
by or under the responsibility of one of the parties must perform its operations
according to the safety rules and legal obligations related to safety of the party that is
the owner. Similarly, TEİAŞ personnel performing work on a site that is owned by or
under the responsibility of a user must perform his operations according to the safety
38
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
rules and the legal obligations related to safety of that user. TEİAŞ and users provide
training for their personnel on these issues with periods not longer than 5 years.
Where settings, principle, fundamental procedure, site responsibility schedule and
manoeuvre diagram that shows the condition of the site including the boundaries for
operations and asset ownership between the parties or that that forms the basis of this
concept is requested for the connections of one of the parties, they are given by the party
that is the owner to the other party.
TEİAŞ and the users establish the essential precautions related to the protection of
the environment during the work they perform.
PART SEVEN
Power System Restoration
Principles of power system restoration
Article 83 Power system restoration covers the principles related to
achievement of continuous supply to all customers as quickly and as safely as possible
and with minimum adverse consequences by TEİAŞ in the event of a partial or total
shutdown of the power system.
Parties subject to power system restoration
Article 84- Principles of power system restoration apply to;
a) TEİAŞ, including the services acquired according to the ancillary service
agreements within the concept of international interconnections,
b) The legal entities operating as generators in hydro plants with reservoir and
in generation facilities running on natural gas,
c) Legal entities that export.
Generation facilities with black start capability
Article 85- Ancillary service agreements are made with generation facilities
that can return to service without the need for external power supplies and they are
registered by TEİAŞ as having the capability of starting up. Power supplied from a
black start station can be used to energise the transmission system, to supply power to
the customers and to reconnect the other generation facilities.
Interconnection connections and facilities between islanded power systems shall
also be utilised if appropriate to provide a means of power system restoration.
The power system restoration plan
Article 86- TEİAŞ shall be responsible for producing and updating a detailed
power system restoration plan.
The overall restoration strategy to be followed by users will be set out in this
plan which shall provide for the following sequential steps:
a) The establishment of a number of islanded systems, centred on the start up
of black start stations,
39
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
b) the feeding of local load from the generation facilities,
c) the synchronisation of these islanded power systems with each other,
d) the final full restoration to normal operation of the total power system.
In addition to setting out the overall restoration strategy to be adopted, the plan
shall also address such issues as:
a) Restoration priorities,
b) Facilities available for restoration,
c) Guidelines to be given to generation stations, distribution companies, and
other users who must act on TEİAŞ instructions or, in the event of failure of
communications, act independently to create an ıslanded system,
d) Communication with government, media and the public.
Updating the power system restoration plan
Article 87- TEİAŞ shall review and update the power system restoration plan
when additional plant and/or equipment are connected to the transmission system and
when some existing plant and/or equipment are decommissioned. Apart from these
conditions, the plan shall be reviewed and updated at least every two years.
TEİAŞ may issue revisions to the plan, to take account of developments affecting
the transmission system or other changed circumstances.
Amber alert
Madde 88- The amber alert shall be issued, electronically (if possible), from
NLDC to generation facilities, users and nominated contact locations and control
centres of distribution companies. The amber alert signal should be realised without
any delay at the receival points and must be acknowledged by the recipient. In the
event of failure or nonexistence of electronic communication, the alert may be issued
verbally and acknowledged verbally.
The user receiving the amber alert signaling system shall follow the the amber alert
procedures. These procedures shall set out the actions required of the user in the event of a
shutdown.
The amber alert signaling system and the amber alert procedures shall be reviewed
at least biennially by the NLDC overseeing the review of the power system restoration
plan. Changes to the amber alert procedures by the user at any location must be notified to
NLDC by the user without any delay.
Implementation of power system restoration plan
Article 89- The power system restoration plan sets out guidance to assist those
involved in the restoration process to achieve total restoration of the power system as
quickly and as safely as possible.
The power system restorattion plan may vary with the availability of generation
facility and/or equipment, with time, with their usage and maintenance needs. When
the plan cannot cater for all possible partial or total shutdown scenarios due to the
40
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
mentioned changes, TEİAŞ, acting through NLDC, will evaluate the status of the
Power System, and determine a new system restoration plan.
Each legal entity operating as generator or distributor shall abide by NLDC
instructions during the restoration process, even in the event that they may conflict with
certain details contained in the power system restoration plan or the amber alert
procedures.
Power system restoration training
Article 90- It shall be the responsibility of each user to ensure that their
personnel who are nominated to be involved with the power system restoration plan or
the amber alert procedures are adequately trained and have sufficient qualifications
and experience.
PART EIGHT
Significant Event Reporting
Principles of significant event reporting
Article 91- Significant events occurring during operation of the system are
reported to TEİAŞ in writing for the purpose of ensuring the essential information
exchange between the parties and establishing the operational policy.
Parties subject to reporting
Article 92- Principles of reporting apply to;
a) TEİAŞ,
b) Legal entities operating as generators that is directly connected to the
transmission system,
c) Distribution companies,
d) Legal entities operating as generators that are connected to the distribution
system and that are parties to balancing system,
e) Eligible consumers that are directly connected to the transmission system.
Reporting procedures
Articles 93- The reporting of significant events are performed according to the
principles below;
a) Reports shall be in writing,
b) Reports are addressed to the RLDC,
c) Reports include the written confirmations of verbal notifications,
d) Reports will be submitted during the first business day following the event,
e) Reports are prepared in line with the format given in Appendix-8.
TEİAŞ notifies the other users who are likely to be materially affected by the event
with approval from the party who originated the report. The reporting user submits a report
to TEİAŞ for wider circulation, with commercial information removed. TEİAŞ complies
with rules concerning confidentiality during evaluation of the report.
41
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
PART NINE
Numbering and Nomenclature of Plant and/or Equipment
at Connection Points
Principles of numbering and nomenclature
Article 94- Principles of numbering and nomenclature sets out the
responsibilities and procedures for determining the numbering and nomenclature of
plant and/or equipment to be used at connection points belonging to TEİAŞ or the user
including the naming of the substations.
The numbering and nomenclature of plant and/or equipment is to be included in an
manoeuvre diagram prepared for connection points.
The format for numbering and nomenclature of plant and/or equipment shall be as
shown in Appendix-12.
Parties subject to numbering and nomenclature
Article 95- The principles for numbering and nomenclature of plant and/or
equipment at the connection points apply to TEİAŞ and the users 66 kV or higher.
Procedure
Article 96- The following procedures are applied regarding the numbering and
nomenclature of plant and/or equipment at the connection points;
a) All users’ plant and/or equipment at a connection point shall have
numbering and/or nomenclature which cannot be confused with TEİAŞ’ or any other
user’s plant and/or equipment. These numbers and names will be clearly shown on the
manoeuvre diagram.
b) The manoeuvre diagram shall be maintained and revised by the owner of
the plant and/or equipment to show correct numbering and/or nomenclature. A current
copy of the manoeuvre diagram shall be clearly displayed at every connection point.
c) The numbering of the connection points is carried out by TEİAŞ.
d) In case of a dispute regarding the numbering and/or nomenclature at a
connection point, TEİAŞ will determine the numbering and/or nomenclature to be
implemented,
e) The notifications regarding numbering and nomenclature of new
connections are done not later than 3 months prior to the commissioning of the unit or
at a shorter notice upon the agreement between users.
Labelling of plant and/or equipment
Article 97- Users, including TEİAŞ, shall provide, erect and maintain clear and
unambiguous weatherproof labelling showing the numbering and/or nomenclature of
all plant and equipment at connection points. These labels must be fitted before
commissioning.
PART TEN
42
Disclaimer:
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between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
System Tests
Prtinciples of Tests
Article 98- Principles of tests involve controlled application of system tests
under conditions apart from normal operating conditions on the user’s system and/or
the transmission system.
These tests are carried out by the user or TEİAŞ. Such tests which may have a
material impact upon the user’s system and/or the transmission system are undertaken
in such a manner to ensure that;
a) they do not threaten the safety of personnel or threaten to damage plant
and/or equipment and cause the minimum detriment to other users,
b) the test and test procedures are notified to TEİAŞ prior to commencement,
and where necessary the test results are reported to TEİAŞ.
Parties subject to test
Article 99- Principles of test apply to;
a) TEİAŞ,
b) Legal entities operating as generators that are directly connected to the
transmission system,
c) Eligible consumers that are directly connected to the transmission system,
d) Distribution companies.
Test procedure
Article 100- System tests are performed according to the procedures below:
a) Test proposal notice;
1) Where a user has decided that it would like to undertake a system test it
shall submit a proposal notice to TEİAŞ in writing at least twelve months in advance
of the date of the test. The proposal notice shall contain the purpose of the proposed
system test and shall indicate the technical properties of the plant and/or equipment
involved.
2) If the information set out in the proposal notice is insufficient, further
information is requested from the user. The proposal notice will not be accepted until
the relevant information is provided.
3) If TEİAŞ wishes to undertake a system test, TEİAŞ shall be deemed to
have received a proposal notice.
b) Preliminary notice and establishment of test panel;
1) TEİAŞ will determine, which parties (if any) may be affected by the
proposed System Test in line with the information provided in the proposal notice
submitted, and will sent a preliminary notice to these parties.
2) The system tests of the internationally interconnected parties will not take
place unless it is stated in the interconnection agreement that they are subject to the
principles of system tests.
43
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
3) TEİAŞ will appoint a a test coordinator that will coordinate the system tests
after it has received a proposal notice and in any event prior to the distribution of the
preliminary notice. This coordinator shall act as chairman of the test panel and shall be a
member of the test panel.
c) When the system tests are to be undertaken by TEİAŞ, the test coordinator
will be assigned by TEİAŞ. In other circumstances, the test coordinator is assigned by
TEİAŞ;
1) in line with the comments from parties that will be affected by the
system test and the party/parties that propose the system test,
2) from among persons nominated by the test proposer provided that the
test does not affect the system significantly,
but if the party or parties who propose the test are unable or unwilling to
nominate a person within seven days after notification by TEİAŞ, then the proposed
system test will be cancelled.
d) Preliminary notice
The preliminary notice will contain;
1) the identity of the party/parties proposing the test, the details of the
nature and purpose of the proposed system test, the technical properties of the plant
and/or equipment involved and the identity of the users that will be affected by the
test,
2) an invitation to nominate within one month a representative (or
representatives, if the test coordinator agrees that it is appropriate) to be a member of
the test panel for the proposed system test,
3) the name of the TEİAŞ representative on the test panel,
4) the name of the test coordinator and whom he was nominated by.
The preliminary notice will be sent to the parties within one month of the receipt by
TEİAŞ of all the relevant information that should be included the proposal notice.
The names of representatives nominated to be a member of the test panel must be
sent to TEİAŞ by the parties within one month of the date on which the preliminary notice
is sent to parties. TEİAŞ assignes the members of the panel notified by the relevant parties
and provides their names to all parties.
Any user which has not notified the name of their representative will not be entitled
to be represented on the test panel. If the test proposer does not notify the name of his
representative, the proposed system test will not take place, and the users that will be
affected by the test and the test proposer will be notified accordingly.
The work of the Test Panel
Article 101- A meeting of the test panel will take place within one month of the
appointment of the members of the test panel.
The test panel shall consider:
a) The operational and risk implications of the proposed system test on the
system,
44
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between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
b) The possibility of combining the proposed system test with any other tests
and with plant and/or equipment outages which arise pursuant to the Operational
Planning requirements,
c) Implications of the proposed system test on the system balancing.
TEİAŞ and the parties shall be obliged to supply the test panel, upon request, with
such details as the test panel reasonably requires, whether or not they are represented on
the Test Panel.
The test panel shall be called to convene by the test co-ordinator as often as he
deems necessary.
Proposal Report
Article 102- Within sixty days of first meeting, the test panel will submit a
proposal report which will contain:
a) Proposals for method for carrying out the system test and the manner in
which the system test is to be managed,
b) An allocation of costs between the affected parties the general principle
being that the test proposer will bear the costs,
c) Such other matters as the test panel considers appropriate.
The proposal report will be submitted to TEİAŞ, the test proposer(s) and to each
User affected by the test by the test panel.
Each recipient of the proposal report will respond to the test co-ordinator with its
approval of the proposal report or its reason for non-approval within fourteen days of
receipt of the proposal report. If any recipient does not respond, the system test will not
take place and the test panel will be dissolved. Apart from these, where an agreement can
not be reached during the preparation of the proposal report, the system test will not take
place and the test panel will be dissolved.
In the event of non-approval by one or more parties, the test panel will meet as
soon as practicable in order to determine whether the proposed system test can be modified
to meet the objection or objections. If the proposed system test cannot be so modified, the
system test will not take place and the test panel will be dissolved. If the proposed system
test can be so modified, a revised proposal report is submitted within one month of the
meeting.
In the event of non-approval of the revised proposal report by one or more parties,
the system test will not take place and the test panel will be dissolved.
Test programme
Article 103- If the proposal report or, as the case may be, the revised proposal
report is approved by all parties, the proposed system test can proceed. At least one
month prior to the date of the proposed system test, the test panel will submit to
TEİAŞ, the test proposer and the user, a test programme stating the switching
sequence and proposed timings of the switching sequence, a list of those staff involved
(including those responsible for site safety) and such other matters as the test panel
deems appropriate.
45
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
The test programme will bind all parties to act in accordance with the
provisions of the test programme in relation to the proposed system test.
Any problems which arise or are anticipated prior to the day of the proposed
system test, must be notified to the test coordinator by the relevant parties as soon as
possible in writing. If the test coordinator decides that these anticipated problems merit
an amendment to, or postponement of, the system test, he shall notify all the parties
accordingly.
If operating conditions are such that any party involved in the proposed system
test wishes to delay or cancel the start or continuance of the system test, they shall
immediately inform the test coordinator of this decision and the reasons for it. The test
coordinator shall then postpone or cancel the system test.
If the system test is postponed, the test coordinator will agree with the test
proposer(s), TEİAŞ and all users on another suitable date and time. If he cannot reach
such agreement, the test coordinator shall reconvene the test panel, which will
endeavour to arrange another suitable time and date for the system test.
Final report
Article 104- At the conclusion of the system test, the test proposer(s) shall be
responsible for preparing a written report on the system test for submission to TEİAŞ
and other members of the test panel. The final report shall be submitted within three
months of the conclusion of the system test unless a different period has been agreed
by the test panel.
The final report shall not be submitted to any person or party who is not a
member of the test panel unless the test panel shall have approved such submission.
When the final report has been prepared and submitted, the test panel will be
dissolved.
Timetable reduction
Article 105- In certain cases a system test may be needed on giving less than
twelve months notice. In that case, after consultation with the test proposer(s) and
user(s), TEİAŞ shall draw up a timetable for the proposed system test which shall be
followed in accordance with that timetable.
PART ELEVEN
Testing, Monitoring and Investigation
Principles of Testing, Monitoring and Investigation
Article 106- Mandatory ancillary services, necessary commercial ancillary
services and the commitments for balancing are subject to testing, monitoring and
investigation for the purpose of control.
Where the plant and/or equipment owned by the users fail in these tests, the
related provisions of connection and/or use of system agreements and the ancillary
service agreements will be in force.
46
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Parties subject to testing, monitoring and investigation
Article 107- The principles of testing, monitoring and investigation apply to;
a) TEİAŞ,
b) Legal entities operating as generators that are party to the balancing system,
c) Distribution companies,
d) Eligible consumers that are directly connected to the transmission system.
Performance monitoring procedures
Article 108- TEİAŞ shall be monitoring the performance of;
a) The balancing system units and blocks against balancing parameters,
b) The users to see whether they perform their activities in compliance with
the connection and balancing principles set out this regulation,
c) The provision by users of ancillary services which they have agreed to
provide.
In the event that a balancing system unit or block fails to meet, in any material
respect, the parameters registered as connection and balancing parameters it has agreed
to comply with or to provide the ancillary services, TEİAŞ shall notify the relevant
user in writing. The relevant user must, as soon as possible, provide TEİAŞ with the
details of the precautions he will apply for the purpose of eliminating the reasons for
failure. TEİAŞ and the user will then discuss the details of these precautions. Where
new operating conditions have been decided to apply for the balancing system unit or
block, in the event that agreement on these conditions and the effective date for
application cannot be reached within 10 days, TEİAŞ shall be entitled to request a test
to be carried out on the unit or block.
Reactive power tests
Article 109- TEİAŞ may at any time issue an instruction requiring a balancing
system unit or connection block to carry out a reactive power test to check the reactive
power they have agreed to provide according to the connection principles.
TEİAŞ issues this test instruction to the user within at least 48 hours prior to
the test, provided that there will not be a planned outage for the unit or block on the
date of the test.
The user shall provide an indication of the physical notification for the date the
test will be performed.
The reactive power test will be performed not more than twice in any calendar
year.
The test will be performed in accordance with the balancing parameters
prevailing on the date the test will be carried out.
The duration of the test will be for a period of up to 60 minutes during which
period the voltage is monitored at the transmission connection point for the relevant
47
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
unit or block to check whether it is maintained within the range set out in the balancing
parameters. If necessary, the reactive power of the other units or blocks are changes
and the response of the unit or block under test to this change is measured.
The performance of the unit or block will be recorded on a chart recorder in the
user’s control room, in the presence of such persons as TEİAŞ may require,
synchronously together with the values taken from the unit terminals and will be
tested. The unit or block will pass the test if the reactive power output provided during
the test is within +5% or -5% of the capability committed. The relevant user must, if
requested, demonstrate to TEİAŞ’s satisfaction the calibration and other certificates of
the chart recorders.
If the unit or block concerned fails to pass the test and this is accepted by the
user, the user must provide TEİAŞ with a written report specifying in reasonable detail
the reasons for any failure of the test. This must be provided within three business
days after the test.
If a dispute arises between TEİAŞ and the relevant user relating to the failure of
the unit, the user may require TEİAŞ to carry out a re-test. TEİAŞ carries out a re-test
on 48 hours notice and the test is repeated. If the unit or block concerned fails to pass
the re-test, either party may refer the matter for determination under the dispute
resolution procedure in the relevant ancillary service agreement.
If it is accepted that the unit or block has failed the test or re-test, the user shall
within 14 days submit in writing to TEİAŞ the date and time by which he complies
with the reactive power capability he had agreed to provide. TEİAŞ will not
unreasonably withhold its approval of the user’s proposal.
If a unit or block fails the test, the user may amend the relevant registered
parameters relating to the reactive power capability, registered as contracted project
data, and these parameters will be valid for the period until the unit can achieve the
parameters previously registered.
Once the user has indicated to TEİAŞ that the unit or block can achieve the
reactive power parameters previously registered as contracted project data, TEİAŞ
shall either accept that these parameters are met by the notified date and time or
request a re-test.
Frequency sensitive testing
Article 110- TEİAŞ instructs for a frequency sensitive test for the purpose of
measuring the change in the output of a balancing system unit or block with respect to
frequency.
TEİAŞ will notify the test instruction to the user at least 48 hours prior to the
time of the test, provided that there will no planned outage of the unit or block on the
date of the test.
The user provides TEİAŞ the physical notification in respect of the date the test
will be carried out.
48
Disclaimer:
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between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
The test of the balancing system unit or block is carried out by using the
voltage and current signals provided by the user. Where the performance test at site is
requied, the test is undertaken by the sychronous recording of the current, voltage and
frequency values taken on the unit side of the generator transformer on a chart recorder
in the relevant user’s control room in the presence of such persons as TEİAŞ may
require.
If the user requests, measurements of the speed governors pilot oil/valve
position are also included to these records.
The unit or block, as the case may be, will pass the frequency sensitive test if;
a) Where monitoring of the ten second response and/or thirty second response
and/or high frequency response to frequency change on the power system has been
carried out, the measured response in MW/Hz is within ± 5% of the level of response
specified in the ancillary service agreement for that unit or block, as the case may be,
b) The speed governor pilot oil/value position has been measured, such
measurements are within the criteria set out in the connection agreement,
c) The response measured as a result of the test carried out on the MW/Hz
change of the unit or block is within the requirements of Appendix-4 for gas turbine
units except for combined cycle gas turbines.
All the conditions which may affect the results of the test are taken into account
during the test. The relevant user must, if requested, demonstrate to TEİAŞ’s
reasonable satisfaction the calibration and other certificates of the chart recorders.
If the unit or block concerned fails to pass the test and this result is accepted by
the user, the user must provide TEİAŞ with a written report specifying in reasonable
detail the reasons for any failure of the test within five business days of the test.
If a dispute arises between TEİAŞ and the user relating to the failure of the
unit, the user may by notice require TEİAŞ to carry out a re-test. TEİAŞ makes a
notification 48 hours before the test and the test is repeated. If the unit or block
concerned fails to pass the re-test and a dispute arises, either party may refer the matter
for determination under the dispute resolution procedure in the relevant ancillary
service agreement.
If the unit or block, as the case may be, has failed the test or re-test, the user
shall within 14 days submit in writing to TEİAŞ for approval the date and time by
which he can comply with the frequency commitments previously registered. TEİAŞ
will not unreasonably withhold its approval of the user’s proposal.
If a unit or block, as the case may be, fails the frequency sensitive test, the user
may amend the relevant registered parameters registered as contracted project data,
and these parameters will be valid for the period until the unit can achieve the
parameters previously registered.
Once the user has indicated to TEİAŞ that the unit can achieve the frequency
parameters previously registered as contracted project data, TEİAŞ shall either accept
this information or require a re-test.
49
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Five minute response testing
Article 111- TEİAŞ may issue an instruction to for any one or more of the
balancing system units or blocks to synchronise and load up in accordance with its
indication of the physical notification to tests their five minute response capability.
TEİAŞ will notify test instruction to the user at least 48 hours prior to the time
of the test, provided that there will no planned outage of the unit or block on the date
of the test.
The user provides TEİAŞ the physical notification in respect of the date the test
will be carried out.
This test will be performed not more than twice in any calendar year.
The test will be performed in accordance with the balancing parameters
prevailing on the day ahead of the the notification date.
The performance of the unit or block will be recorded on a chart recorder in the
user’s control room, in the presence of such persons as TEİAŞ may require,
synchronously together with the values taken from the unit terminals and will be
tested.
The test will be deemed valid if the test data meets the five minute response
criteria given in Article 57. The user must, if requested, demonstrate to TEİAŞ’s
reasonable satisfaction the calibration and other certificates of the chart recorders.
If the balancing system unit or block concerned fails to pass the test, and this
result is accepted by the user, the user must provide TEİAŞ with a written report
specifying in reasonable detail the reasons for any failure of the test within five
business days of the test.
If a dispute arises between teiaş and the user relating to the failure, the user
may by notice require TEİAŞ to carry out a re-test on 48 hours notice and the test is
repeated. If the unit or block, as the case may be, fails to pass the re-test and a dispute
arises, either party may refer the matter for determination under the dispute resolution
procedure in the relevant ancillary service agreement.
If it is agreed that the unit or block, as the case may be, has failed the test or retest, the user shall within 14 days submit in writing to TEİAŞ for approval the date and
time by which the user can meet its five minute response capability. TEİAŞ will not
unreasonably withhold its approval of the user proposal.
Once the user has indicated to TEİAŞ that the five minute response capability
requirements registered as contracted project data can be achieved, TEİAŞ shall either
accept that these parameters are met by the notified date and time or request a re-test.
Black start testing
Article 112- TEİAŞ may require a black start test on a unit or a block in a black
start station, to test the black start capability. Black start test is carried out either while
the generation facility remains connected to an external alternating current electrical
50
Disclaimer:
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between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
supply, or while the generation facility is disconnected from all external alternating
current supplies.
TEİAŞ notifies the relevant user having black start plant at least 3 days prior to
the time of the black start test with details of the proposed black start test.
TEİAŞ shall not require the black start test to be carried out on more than one
unit or block at that black start station at the same time.
The generation facility connected to an external alternating current electrical
supply will not be required to perform a Black Start Test more than once in each
calendar year unless TEİAŞ can justify on reasonable grounds the necessity for further
tests or unless the test has failed.
The generation facility disconnected from all external alternating current
supplies will not be required to perform a black start test more than once in every two
calendar year unless TEİAŞ can justify on reasonable grounds the necessity for further
tests or unless the test has failed.
Where local conditions require variations in this procedure the user shall submit
alternative proposals, in writing, prior to commencement of the test for TEİAŞ's prior
approval.
The following procedure will, in so far as practicable, be carried out in the
following sequence for black start tests;
a) Black start test carried out either while the generation facility remains
connected to an external alternating current electrical supply:
1) The relevant black start unit shall be synchronised and loaded,
2) The black start generation facility shall be de-loaded and desynchronised and all alternating current electrical supplies to its auxiliaries shall be
disconnected,
3) The auxiliary gas turbines and/or auxiliary diesel generators and/or
Auxiliary hydro generators to the relevant generation facility shall be disconnected,
4) The auxiliary gas turbines or auxiliary diesel generators or auxiliary
hydro generators to the relevant black start unit shall be started, the internal demand
busbar of the black start unit is re-energised,
5) The auxiliaries of the relevant unit shall be fed by the internal demand
busbar to enable the relevant black start unit to return to synchronous speed,
6) The relevant black start unit shall be synchronised to the system but not
loaded, unless the appropriate instruction has been given by TEİAŞ.
b) Black start test carried out either while the generation facility is disconnected
from all external alternating current supplies;
1) All units at the black start generation facility, other than the unit on
which the black start test is to be carried out, and all the auxiliary gas turbines and or
auxiliary diesel generators and or auxiliary hydro generators at the black start station,
shall be shut down,
51
Disclaimer:
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between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
2) The relevant black start unit shall be de-loaded and de-synchronised,
3) All external alternating current electrical supplies to the unit board and
to the station board of the relevant black start station shall be disconnected,
4) An auxiliary gas turbine or auxiliary diesel engine or auxiliary hydro
generator at the black start station shall be started, and unit shall re-energise either
directly, or via the station board, or the unit station board,
5) The auxiliaries of the relevant unit shall be fed by the internal demand
busbar to enable the relevant black start unit to return to synchronous speed,
6) The relevant black start unit shall be synchronised to the system but not
loaded, unless the appropriate instruction has been given by TEİAŞ.
All black start tests shall be carried out at the time specified by TEİAŞ and
shall be undertaken in the presence of such persons as TEİAŞ may require, who shall
be given access to all information relevant to the black start test.
A unit or block shall fail a black start test if the black start test shows that it
fails to be synchronised to the power system within 15 minutes after being required.
If a unit or block fails to pass a black start test or the result of the test is not
accepted by the user, the user must provide TEİAŞ with a written report specifying in
reasonable detail the reasons for any failure of the test within five business days.
If a dispute arises between TEİAŞ and the user relating to the failure, the user
may require TEİAŞ to carry out a further black start test on 48 hours notice. If the
black start station unit or block fails to pass the re-test and a dispute arises, either party
may refer the matter for determination under the dispute resolution procedure in the
relevant ancillary service agreement.
If it is accepted that the unit or block has failed the black start tests, within 14
days, the relevant user shall submit to TEİAŞ in writing for approval, the date and time
by which the black start capability can be achieved. TEİAŞ will not unreasonably
withhold its approval of the user’s proposal.
Once the user has indicated to TEİAŞ that the unit can achieve the black start
capability parameters previously registered as contracted project data, TEİAŞ shall
either accept that these parameters are met by the notified date and time or request a
re-test.
Availability testing
Article 113- Availability tests to determine the availability of a unit or block,
either on TEİAŞ’s request in accordance with ancillary service agreements or on
TETAŞ’s request in accordance with the requirements of the relevant provisions of the
power purchase agreement for the generation units TETAŞ pays for maintaining
available capacity.
The user will comply with the instructions properly given relating to the
availability test of the unit or block.
52
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
TEİAŞ, consulting with TETAŞ, will determine whether or not a unit or block
has passed an availability test. The prices to be paid for these tests are determined in
accordance with the procedures set out in the ancillary service agreements and power
purchase agreements which TETAŞ is a party to.
System balancing accuracy testing
Article 114- TEİAŞ may not more than twice in any calendar year issue an
instruction requiring a test to be carried out on any one or more of the user’s unit or
block, as the case may be, to demonstrate that the relevant unit or block meets the
relevant generation system balancing parameters.
TEİAŞ issues this test instruction to the user at least within 48 hours prior to
the test, provided that there is not a planned outage for the unit or block on the date of
the test.
The user shall provide an indication of the physical notification for the date the
test will be performed.
The user will comply with the instructions properly given relating to the system
balancing accuracy testing of the unit or block.
The test will be initiated by generation system balancing parameters prevailing
on the day on which the test is called. The duration of the test will be sufficient to
measure the relevant generation system balancing parameters.
The performance of the unit or block, as the case may be, will be recorded on a
chart recorder synchronously, with measurements taken on the generator side of the
generator transformer, in the relevant user’s control room, in the presence of such
persons as TEİAŞ may require. The relevant user must, if requested, demonstrate to
TEİAŞ’s satisfaction the calibration and other certificates of the chart recorders.
The unit or block shall be deemed to pass the test if;
a) Synchronisation is achieved within +5 minutes of the time it should have
achieved Synchronisation,
b) The synchronising generation achieved is within an error level equivalent to
2.5% of contracted capacity,
c) The unit or block tested for run-up rates achieves the physical notification
and, where applicable, the first and or second intermediate breakpoints, each within +3
minutes of the time it should have reached such output and breakpoints from
synchronisation,
d) The unit or block tested for de-loading rates achieves de-loading within +5
minutes of the time, calculated from registered de-loading rates, that it should have
achieved de-loading.
Due account will be taken of any conditions which may affect the results of the
test.
53
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
If the unit or block fails to pass the test and this result is accepted by the user,
the user must provide TEİAŞ with a written report specifying in reasonable detail the
reasons for any failure of the test within three business days of the test.
If a dispute arises between TEİAŞ and the user relating to the failure, the user
may by notice require TEİAŞ to carry out a re-test on 48 hours notice and the test is
repeated. If the unit or block, as the case may be, fails to pass the re-test and a dispute
arises on that, either party may refer the matter for determination under the dispute
resolution procedure in ancillary service agreement.
If it is accepted that the unit or block, as the case may be, has failed the test or
re-test, the user shall within 14 days submit in writing to TEİAŞ for approval the date
and time by which the it complies with the relevant generation system balancing
parameters. TEİAŞ will not unreasonably withhold its approval of the user’s proposal.
If a unit or block fails balancing accurasy test, the User may amend the relevant
registered parameters relating to Generation System Balancing, registered as
Contracted Project Data, and these parameters will be valid for the period until the unit
can achieve the parameters previously registered.
Once the user has indicated to TEİAŞ the date and time that the unit can
achieve the parameters previously registered, TEİAŞ shall either accept that these
parameters are met by the notified date and time or request a re-test.
PART FIVE
Balancing Rules
SECTION ONE
Generation Planning
Generation planning principles
Article 115- The generation planning shall include i) the preparation of
generation-consumption plans for the day ahead by the NLDC in line with the bids and
offers submitted by the users, ii) keeping the generation capacity available with
sufficient amount of reserves, and iii) ensuring security and quality of supply and
system integrity.
Parties subject to Generation Planning
Article 116- The generation planning principles shall be applicable for
a) TEİAŞ,
b) Legal entities engaged in generation and subject to balancing,
c) Distribution companies,
d) Eligible consumers directly connected to the transmission system.
Procedures
Article 117- The generation planning shall be performed in line with the
following procedures:
54
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
a) Timescale
Within the framework of the timescale of the day before the balancing; at 09.30
the NLDC shall announce the 24x1 demand forecasts for the period between 00:00 and
24:00.
Until 12:00, the NLDC shall perform daily demand forecast analysis based on the
previous day’s data. The RLDC shall notify the NLDC of any changes in the transmission
system and generation availabilities.
The NLDC shall perform generation facility ordering, load flow arrangements,
security analysis, short circuit analysis and system stability analysis, as it deems necessary
for system security.
At 12.00, the legal entities engaged in generation activity subject to balancing
and settlement, shall notify the following for each unit of the generation facility:
1) Physical status notification indicating hourly MW values for the day ahead,
2) Availabilities, MWh for hydroelectric plants and MW for other plants,
3) Bid and offer amounts,
4) Operation start and finish times,
5) Hourly bids and offers for settlement periods,
6) Time periods required for acceptance of bids and offers,
7) Minimum stable generation levels,
8) Final contract amounts for each settlement period.
The distribution companies shall notify the NLDC of the operational
constraints that affect the transmission system for the day planned.
The NLDC shall officially publish the generation-consumption plan at 16:00.
The bids and offers accepted by the NLDC shall be published hourly for each unit.
These acceptances shall be notified to TETAS, bidders, and RLDCs.
The NLDC may send synchronization orders to the users even before the
publication of the generation-consumption plan for the planned day. In case the
synchronization is delayed, the users shall immediately notify the NLDC of the situation.
The generation-consumption plans published by NLDC at 17:00 shall be
deemed to be officially accepted by the bidders.
b) Generation bids
The generation bids shall be notified to the NLDC together with changes in
availabilities until 12:00.
The balancing parameters pertaining to the units subject to balancing and
settlement shall be submitted to the NLDC by users using the format indicated in Appendix
14.
55
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
In cases where any unit or generating block changes its availability status (from
non-availability to available status), the users shall submit availability notifications. Such
notification shall state that the unit and/or the block may start operating in synchronization
with the transmission and/or distribution system as of the any hour notified.
c) Distribution system and user’s system data
The distribution companies and users directly connected to the transmission system
shall notify the NLDC of the following for the subsequent availability period until 12:00
everyday:
1) Constraints emerging in the distribution system or user’s system and
operation of units connected to the distribution system,
2) Transmission system reserve MVAr requirements.
Physical status notifications, bids and offers
Article 118- The users shall notify the NLDC of all changes in the unit
balancing parameters, including availability, physical status, bids and offers, until
12:00.
The user shall submit physical status notifications for all generation facilities
with unit capacities of 50 MW and above or total installed capacities of 100 MW and
above. Such notifications shall also include bids and offers for each settlement period.
In case the unit use ancillary fuels, the unit balancing parameters shall be
notified separately for each fuel type.
The bids and offers may not be subject to change after they are submitted.
The physical status notifications shall be binding for the related users. On the
condition to be permitted by the NLDC and provided that if will not affect the system,
the users may alter/transfer the physical status notifications from one unit to another
within the same generation facility.
On the condition to be permitted by the NLDC and provided that if will
noaffect the system, the users may alter/transfer the physical status notifications from
one generation facility to another within the same generation portfolio and from one
unit to another within the same generation facility. Such alterations shall not be
allowed in cases where the system integrity and security and quality of supply are not
ensured.
In cases where the user fails to notify the NLDC of the unit balancing
parameters until 12:00, the current (existing) unit balancing parameters and bids and
offers shall be deemed to be valid.
The physical status notifications regarding the hydroelectric units used for
irrigation purposes shall be published for 24x1 hours.
56
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Preparation of generation timescales
Article 119- The NLDC shall prepare the following schedules regarding the
generation-consumption balance for the day ahead:
a) Unrestricted contract schedule: This schedule shall indicate the contractual
allocation of the outputs of units subject to balancing and settlement, based on the
presupposition that the transmission system does not have any constraints,
b) Generation-consumption plan: This plan shall indicate the contractual
allocation of the outputs of units subject to balancing and settlement, with due regard
to the transmission constraints.
The NLDC shall prepare the generation-consumption plan in a manner to
consider the transmission constraints, transmission losses, the order of bids and offers
and the operational reserves required for meeting the demand.
Evaluation of bids and offers
Article 120- The NLDC shall evaluate the bids and offers with due regard to
the following:
a) Technical constraints of units,
b) Transmission and distribution constraints,
c) Unit balancing parameters,
d) Bid and offer prices submitted by the unit.
Determination of bids and offers orders in case of bad weather conditions
or damage risks
Article 121- In case of bad weather conditions or operational risks in nthe
transmission system, the NLDC may deviate from the bids and offers orders
determined, as part of the emergency plans, and may prefer to operate another unit.
Synchronization program
Article 122- The operation start and finish times of the units included in the
generation-consumption plan shall be determined by the NLDC in a manner to meet
the system demand. The units shall be ready for synchronization in line with the
generation-consumption plan. The periods required for synchronization of the units
indicated therein within the previously determined periods shall be notified to the
NLDC by the users.
Meeting the minimum demand
Article 123- The NLDC shall constitute the amount of reserve capacity
required for frequency control operations under minimum load conditions.
Obligation to provide data
Article 124- The user shall notify the NLDC of the parameters of the related
unit within the timelimits specified.
57
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
SECTION TWO
Ancillary Services
Mandatory ancillary services
Article 125- The mandatory ancillary services to be provided by the legal
entities engaged in generation activities shall include the following:
a) The reactive power flowing in or out of the system by the units during their
operation as generators or synchronized compensators,
b) Primary prevention control as indicated in Appendix-4,
c) Primary sustainability control as indicated in Appendix-4,
d) Primary high frequency control as indicated in Appendix-4.
Commercial ancillary services
Article 126- The legal entities engaged in generation activity may provide the
following ancillary services if they reach an agreement with TEİAŞ for provision of
such services:
a) Secondary frequency control,
b) Warm and hot reserves, standing reserves, fast start reserves,
c) Frequency control in the form of fast acting reserves,
d) Demand control,
e) Reactive power capacity (other than capacity that ensures nominal output of
units between 0.85 and 0.95 capacity factors),
f) Black start.
SECTION THREE
Balancing
Real-time balancing principles
Article 127- The balancing principles shall include principles regarding the
availability conditions of the units subject to balancing and settlement and acceptance
of bids and offers by the NLDC with due regards to the system operation conditions.
Parties subject to real-time balancing
Article 128- The parties subject to balancing include TEİAŞ and legal entities
engaged in generation activity and subject to balancing and settlement.
Procedures
Article 129- The NLDC shall notify the RLDCs of the acceptances based on
the load dispatch status in the system. The RLDCs shall notify these acceptances to the
generation facilities and receive the related confirmations. The NLDC shall directly
inform the bidders that submit bids and offers for more than one plant.
The units subject to frequency control shall automatically change their
generation outputs in line with the changes in frequency.
58
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
In case of any changes in availabilities, while evaluating the generation bids
and offers, the NLDC shall consider the following factors in addition to the
availability status, bids and offers:
1) the failure of the related entity in meeting its obligations arising from its bids
and offers,
2) differences between estimated and existing demand,
3) the condition of the units during tests, acceptances and commercial
operations.
In cases where two or more users submit the same bids and offers, the NLDC
shall prefer the one that is most compliant with this regulation.
The NLDC may re-optimize the generation-consumption plan, when required. The
users have to notify the RLDC of any changes in availability status. The users shall first
notify the RLDC via telephone and then, confirm the situation in writing.
Acceptance of bids and offers
Article 130- On the condition to be included in the availability notification, the
NLDC may accept the bids and offers of a unit even if it is not included in the
generation-consumption plan. The NLDC shall receive the bids and offers of such
units from the shift officer in charge at the generation facility.
The acceptances approved by the legal entities engaged in generation activity shall
be notified to the NLDC via telephone and/or fax and then, confirmed in writing.
Scope of acceptances for units subject to balancing and settlement
Article 131- The user accepts that its bids and offers are in the form of spinning
reserves, unless otherwise stated by the NLDC.
The acceptance may include the following:
a) Synchronization time,
b) Provision of ancillary services such as frequency control, reactive power,
reserves and black start,
c) Details regarding the power transformer levels of the units,
d) Test orders,
e) Weather conditions and its effects.
Order form
Article 132- The final versions of the orders shall be recorded in the order
forms, which shall be kept in registry for ten years.
Liabilities of the legal entities engaged in generation activities
Article 133- The legal entities shall comply with all their obligations when
their bids and offers are accepted by the NLDC, and shall immediately notify the
NLDC if they are likely to fail meeting their obligations.
59
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
Emergency conditions
Article 134- The NLDC shall publish emergency condition orders in order to
protect the operational security of the transmission system under emergency
conditions. Such orders may bring additional obligations for the users in addition to
unit balancing conditions and synchronization notifications. The legal entities engaged
in generation activities shall immediately notify the NLDC if they are likely to fail
meeting their obligations.
SECTION FOUR
Frequency Control
Frequency control principles
Article 135- The frequency control shall be performed by the NLDC via
automatic responses of the units in the frequency control system, load increases and
decreases in the units, and demand control methods.
Parties subject to frequency control
Article 136- The frequency control principles shall applicable for
a) TEİAŞ,
b) Legal entities engaged in generation activities subject to balancing and
settlement,
c) International interconnections,
d) Eligible consumers with demand decreasing options,
e) Distribution companies.
Procedures
Article 137- The frequency control shall be performed using the following
options:
a) All generation facilities with unit capacities of 50 MW and above or total
installed capacity of 100 MW and above shall be obligated to participate in primary
frequency control within the scope of mandatory ancillary services. These facilities
shall also participate in secondary frequency control within the scope of commercial
ancillary services. The generation facilities with lower installed capacity may
participate in primary or secondary frequency control only if they submit proposals to
TEİAŞ and if their proposals are accepted.
b) The NLDC shall increase or decrease the load of any unit in line with its bids
and offers submitted,
c) The units operating via low frequency relays may be used for the following
responses:
1) Synchronization and generation from stand-by position,
2) Generation from zero-generation status,
3) Automatic loading.
60
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
The low frequency relay’s operational set-up conditions shall be determined by the
NLDC and the related user. The users may not change these conditions, except for security
purposes. In cases where it is revealed that these set-up conditions need to be modified, the
user shall immediately notify the NLDC.
d) The NLDC may use the “demand control via low frequency relay” method in
order to meet frequency control conditions. The users shall comply with these conditions,
except for security reasons; and shall notify the NLDC if they fail to meet such conditions.
e) In cases where the system frequency falls, the units shall balance the frequency
by increasing their output power by 4% for each 0.1 Hz decrease in the frequency. In cases
where the system frequency increases, the units shall balance the frequency by decreasing
their output powers.
The correction of electrical timing errors shall be performed by the NLDC through
balancing actions compliant with nominal system frequency. The NLDC shall be
responsible for keeping the electrical timing errors within the pre-determined limits.
PART SIX
Data Recording
SECTION ONE
Principles Applicable to Data Recording and Subject Parties
Principles applicable to data recording
Article 138- This section covers the procedures applicable to the preparation,
updating and recording of operational and planning data which parties request from
each other.
Parties subject to data recording principles
Article 139- Data recording principles shall apply to;
a) TEİAŞ,
b) Legal entities performing generation activities as directly connected to the
transmission system,
c) Distribution companies,
d) Eligible consumers directly connected to the transmission system,
e) Legal entities performing generation activities at generation facilities with 50
MW and higher unit capacity or 100 MW and higher total installed capacity,
connected at the distribution level, or legal entities performing generation activities at
generation facilities with significant impact on the transmission system,
f) Legal entities performing import activities,
g) Wholesale companies,
h) Retail sale companies.
61
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
SECTION TWO
Data Groups, Procedures, Obligations
Data groups
Article 140- Data groups are divided into three categories;
a) Operational and balancing data,
b) Standard planning data,
c) Detailed planning data.
Preparation and presentation of data
Article 141- Users shall prepare and present to TEİAŞ the data sheets given in
annexes and listed in Article 144 in line with the following principles:
a) Data to be prepared pursuant to Sheet 1, 5 and 6 shall be sent to TEİAŞ,
b) In case of an agreement between TEİAŞ and the user regarding data
communication, the method to be pursued shall be specified through mutual
agreement,
c) Data to be prepared pursuant to Sheet 5 shall be prepared in line with the
instructions of TEİAŞ latest by April 30 every year,
d) Users shall take all security measures to protect all data.
Data updating
Article 142- In case of any change in the data recorded at TEİAŞ, user shall
notify TEİAŞ thereof promptly.
Missing Data
Article 143- In the event that data prepared by one of the parties does not reach
the other or reaches but is incomplete, estimated data shall be prepared and such data
shall be communicated to other party in writing.
Data Sheets
Article 144- The data sheets to be prepared are listed below:
a) Sheet 1 – Generation unit or combined cycle gas turbine block data,
b) Sheet 2 – Generation planning parameters,
c) Sheet 3 – Units’ outage programs, usable power and fixed capacity data,
d) Sheet 4 – User systems data,
e) Sheet 5 – User outage data,
f) Sheet 6 – Load characteristics at connection points,
g) Sheet 7 – Demand control,
h) Sheet 8 – Data to be provided by TEİAŞ to users,
i) Sheet 9 – Demand profile and active power data,
j) Sheet 10 – Connection point data,
k) Sheet 11 – Short circuit data,
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Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
l) Sheet 12 – Short circuit data, short circuit currents from power plant
transformers.
The data sheets applicable to user groups are given below:
a) Generation companies directly connected to the transmission system: Sheets
1, 2, 3, 6, 8 and 12,
b) Legal entities performing generation activities at generation facilities with
50 MW and higher unit capacity or 100 MW and higher installed capacity, as
connected at the distribution level, or legal entities performing generation activities at
generation facilities with significant impact on the transmission system: Sheets 1, 3, 8
and 12,
c) Legal entities performing generation activities other than those covered by
sub-paragraphs (a) and (b): Sheets 1, 8, 12,
d) All distribution companies, wholesale companies, retail sale companies,
users directly connected to the transmission system and international interconnection
network operators: Sheets 4, 5, 6, 8, 9, 10, 11 and 12.
Abbreviations used in sheets
SPD
DPD
MinG
MaxG
% MVA
Installed Power
% 100 MVA
GF
NA
GR1
GRN
necessary additions,
FY
=
=
=
=
=
=
=
=
=
=
=
Standard planning data,
Detailed planning data,
Minimum generation,
Maximum generation,
Percentage of Nominal MVA (%),
Registered capacity,
Percentage of 100 MVA (%),
Generation facility,
Not applicable,
Generation group No. 1,
Generation group will be used by user ‘N’ by making
=
Fiscal Year.
PART SEVEN
Settlement of Disputes, Communication, Notification, Effectiveness and
Enforcement
Settlement of disputes
Article 145- In the event that disputes arising from the implementation of this
regulation cannot be settled between TEİAŞ and relevant parties, the Authority shall
be competent in settling disputes. The decision to be taken by the Board shall be
binding on both parties.
Communication and notices
Article 146- Notifications shall be done in conformity with the provisions of
the Notification Law No. 7201.
Provisional Article 1- Of the generation facilities in operation on the publication
date of this regulation, those that do not the meet the minimum frequency control
63
Disclaimer:
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between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.
requirement in line with the provisions of Annex-4 shall obtain the software and hardware
necessary for participation in frequency control within one year following their license
issue date.
Provisions of Article 11 of the Law shall apply to those that do not fulfill their
obligations.
Provisional Article 2- The existing demand forecasts prepared until 1/1/2005 by
relevant institutions as well as transmission system development and investment plans
based on such forecasts shall be used for the preparation of generation capacity projection.
1
Provisional Article 3- Transmission system ten-year development report shall
be prepared for the 380 kV and 154 kV system in the first five years and for the 380
kV system in the last five years.
Provisional Article 4- Of the generation facilities in operation at the
publication date of this regulation, those that do not meet the requirements set out in
Article 9 of the regulation shall be exempted for one year starting from their license
issue date.
Provisional Article 5- Connection to and/or use of system agreements between
TEİAŞ and the real persons or legal entities that will connect to or use the transmission
system shall be signed in line with the provisions of the connection and use of system
communiqué to be published by the Authority within 30 days following the publication
date of this regulation.
Provisional Article 6- Connection to and/or use of system agreements between
TEİAŞ and users connected to or using the transmission system as of the publication date
of this regulation shall be signed latest by November 1, 2003.2
Provisional Article 7- Existing demand forecasts prepared by relevant institutions
and transmission system development and investmen plans based on the aforementioned
demand forecasts are used in preparation of the Generation Capacity Projection until the
demand forecasts prepared in accordance with the regulation concerning demand
forecasting is enacted is approved by the Board.3
Effectiveness
Article 147- This regulation shall be effective at the date of its publication.
Enforcement
Article 148- This regulation shall be enforced by TEİAŞ.
1
Amended by the regulation published in the Official Gazette dated December 31, 2003
and numbered 25333.
2
Amended by the regulation published in the Official Gazette dated July 19, 2003 and
numbered 25173.
3
Inserted by the regulation published in the Official Gazette dated July 15, 2005 and
numbered 25967.
64
Disclaimer:
The English version of the Electricity Market Grid Regulation is intended to assist interested foreign parties. There may be discrepancies
between the Turkish and English versions. In case such discrepancies occur, the Turkish version shall prevail.