Download New Proposed Level 1 ISO Rules

Proposed I.
New Level 1 ISO Rules
Part 500, Facilities,
Division 502, Technical Requirements
Section 502.1
Wind Aggregated Generating Facilities
Technical Requirements
A.
G1 Definitions (Section G1)
The following new definitions hereby are incorporated in to Section G1 of the ISO rules:
“generating facilities” means an aggregation of generating units, designated by the ISO,
situated in the same proximate location.
“maximum authorized MW” means,
(i)
for a generating unit, the maximum quantity (MW) that the generating unit is
authorized by the ISO to deliver to its generator terminal; or
(ii)
for generating facilities with a collector bus, the maximum quantity (MW) that the
generating units are authorized by the ISO to deliver to its collector bus.
“operator” means a person given expressed authority by an owner to operate on the
owner’s behalf any one or more of:
(i)
a generating unit;
(ii)
any generating facilities;
(iii)
a transmission facility;
(iv)
an electric distribution system;
(v)
an industrial system; or
(vi)
a load facility;
and includes the owner, if no such other person has been so authorized.
“person” as defined in the Act includes an individual, unincorporated entity, partnership,
association, corporation, trustee, executor, administrator or legal representative.
“point of connection” means a point at which electric energy is transferred between a
transmission facility that is not an industrial system, and:
(i)
the high voltage side of any generating facilities;
(ii)
an electric distribution system;
(iii)
an industrial system; or
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(iv)
a load facility owned by a person who has arranged directly for system access
service under Subsection 101(2) of the Act.
“transmission system” as defined in the Act means all transmission facilities in Alberta that
are a part of the interconnected electric system.
“wind turbine generator” means the electric turbine generator component of a wind powered
generating unit and includes a synchronous or asynchronous generator.
“voltage regulating system” means the equipment that automatically controls the reactive
power devices to regulate the voltage level at the collector bus of wind generating facilities.
II.
Revised Definitions (Section G1)
The following definition changes hereby are incorporated in to Section G1 of the ISO rules:
The definition of “owner” is deleted and the following is substituted
“owner”, as distinct from the Act, means the person who has title to and ownership of any
one or more of:
(i) a generating unit;
(ii) any generating facilities;
(iii) a transmission facility;
(iv) an electric distribution system;
(v) an industrial system; or
(vi) a load facility.
The definition of “gross MW” is deleted and the following is substituted:
“gross MW” means a real power instantaneous measurement at a generator terminal or
collector bus.
This note is for consultation purposes only.
After considering market participant comments on draft version 1.0 of the new Wind
Aggregated Generating Facilities ISO rules, the ISO has determined that it would be more
advantageous for some market participants if all definitions previously consulted on, both
those that are unique for wind aggregated generating facilities and those more universally
applicable, were reconsulted on as a separate but complementary “package”. Consulting on
“packages” of definitions for applicability across all Authoritative Document domains is
fundamentally consistent with a key objective of the Transition of Authoritative Documents
(“TOAD”) project of the ISO.
Accordingly, please refer to “Package 4” AD Glossary definitions to view the any amendments
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to the G1 definitions which previously accompanied the Wind Generating Facilities Technical
Requirements rules, including any responses of the AESO to market participant comments.
IIB.
Draft New ISO Rules Textrules
Applicability
1(1)
Section 502501.3.1 applies to the ISO, and subject to the provisions of subsections
1(1), (2) and (3) to any:
(a
(i)
new wind aggregated generating facilities and to its legal owner; and
(b)
(ii)
existing wind aggregated generating facilities and to its legal
owner if such facilities connected to the transmission system under the Wind
Power Facility Technical Requirements dated November 15, 2004.
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(2)
The legal owner of any Any wind aggregated generating facilities, who whose
owner executed a Construction Commitment Agreement and completed the ISO’s approval
process of the ISO for connection to the transmission system under the Technical
Requirements for connecting generators (1999), is exempt from this section 502Section
501.3.1, but must remain in compliance with those remains subject to the Technical
Requirements for connecting generators (1999 requirements).
(3)
any:
If any wind aggregated generating facilities referred to in subsection 1(2) undergo
(a) facility addition or replacement such that the resulting accumulative real
powerMW capability is increased by an amount equal to or greater than five (5)
MW;, then the new or
(b) replaced facility replacement of five (5) MW or more;
then the additional or replacement facility and associated real power will be subject to and
must comply with the provisions of this section 502Section 501.3.1 in its entirety.
(4)
Notwithstanding subsection 1(2) above, all wind aggregated generating facilities
must be in compliancecompliant with the provisions contained in subsections 28 and 32 and
36 below.
Requirements
Functional Specifications
2(1) The ISO may, in accordance and consistent with this section 502.1 and any other
applicable ISO rules, approve of written functional specifications containing further details,
direction and discrete work requirements and specifications for the design, construction and
operation of any wind aggregated generating facilities and associated transmission
system connection facilities.
(2)
To the extent of any conflict between the provisions of this section 502.1 and the
provisions of the ISO approved functional specifications for a wind aggregated generating
facilities project, the functional specification provisions will govern, on condition that those
functional specifications provisions are substantially and essentially consistent with the
provisions of this section 502.1.
Maximum Authorized Real Power authorized MW for Wind Aggregated Generating
Facilities
32(1) The legal owner of any new wind aggregated generating facilities must submit to
the ISO the maximum authorized real powerMW for those aggregated generating
facilities, and once approved of by the ISO approves thethis value, it will form part of the
functional specification for the projectspecifications for the wind generating facilities.
(2)
The maximum authorized real power for any existing wind aggregated generating
facilities will be the ”Aggregated MW Capacity” as provided to the ISO under the
requirements of section 5.1 set out in the Wind Power Facility Technical Requirements dated
November 15, 2004.
(3)
In accordance with the illustration set out in Appendix 2, the ISO will determine the
wind generating facilities’ requirements associated with reactive power capability
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requirements for anyof the wind aggregated generating facilities, based on the maximum
authorized real power determined under this subsection 3.
Operating Voltage Requirements
4(1) The legal owner of any wind aggregated generating facilities must submit to the
ISO the value to be used for rated root mean square phase-to-phase voltage at the:
(a) point of connection to the transmission system, based on the normal operating
voltage levels at the specific location of the wind aggregated generating
facilities; and
(b) at any collector bus.
(2)
Once that value is MW as submitted and approved by the ISO, it will form part of the
functional specification for the project..
(3)
The rated root mean square phase-to-phase voltage will be used in the application of
this section 502.1 to determine and apply:
(a) the voltage ride-through requirements;
(b) voltage regulation; and
(c) the reactive Power capability of any wind aggregated generating facilities
Voltage Ride- Through Requirements
53(1) Wind aggregated generating facilities with a maximum authorized real power MW
amount equal to or greater than five (5) MW and connected to the transmission system must
meet the voltage ride- through requirements specified in this subsection 53.
(2)
Each legal owner of wind aggregated generating facilities must ensure they are
capable of continuous operation between ninety percent (90%) and one hundred and ten
percent (110%) of the root mean squared rated phase-to-phase voltage at the point of
connection.
(3)
Subject to subsection 53(4)) below, wind aggregated generating facilities must not
trip off- line any loaded wind turbine generator that is producing real power due to voltage
dips or post-transient voltage rises described in Appendix 1, resulting from normally cleared
transmission system faults on any phase or combination of phases at or beyond the point
of connection.
(4)
Notwithstanding any other provision of this subsection 53, wind aggregated
generating facilities are not required to ride through :
transmission system faults that:
(a) cause a forced outage of a radial transmission line to the wind aggregated
generating facilities;
(a) faults that occur on the wind aggregated generating facilities side of the point of
connection, including the lower voltage network and the substation, or
(b) transmission system faults that result in a transfer trip or anti-islanding protection
scheme to activate at the wind aggregated generating facilities.
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Voltage Regulation and Reactive Power
64(1) The ISO willmust assess voltage regulation and reactive power performance of wind
aggregated generating facilities at the collector busses in accordance with this subsection
6, and all reactive power requirements must be based on the rated voltage at the collector
bus.
(2)
Wind aggregated generating facilities must be able to regulate thetheir voltage at
the voltage regulation system point of control under both non-disturbance and disturbance
conditions.
(3)
Wind aggregated
Wind Generating Facilities Reactive Power Capability
5(1) The reactive power capability of any wind generating facilities to supply reactive
power must meet or exceed +0.9 power factor based on the gross MW of the wind
generating facilities.
(2) The reactive power capability of the wind generating facilities to absorb reactive power
must meet or exceed -0.95 power factor based on the gross MW of the wind generating
facilities.
(3) Continuous reactive power capability referred to in subsections 6 and 7 below may be
aggregated to meet the requirements set out in subsection 5(1) and subsection 5(2) above.
(4) All reactive power devices used to vary the wind generating facilities’ output of reactive
power within the requirements set out in subsection 5(1) and subsection 5(2) above must be
under control of a voltage regulation system.
(5) The operator must not intentionally, and the control systems of wind generating facilities
must not be designed, to reduce the reactive power capability from the dynamic reactive
devices described in subsection 6, or the non-dynamic reactive devices described in
subsection 7.
Dynamic Reactive Power Capability
6(1) The dynamic reactive power capability of any wind generating facilities must meet or
exceed plus zero point nine five (+0.95) power factor to minus zero point nine eight five (0.985) power factor based on the gross MW of the wind generating facilities.
(2) Wind generating facilities must have reactive power devices that are continuously
acting and continuously variable under control of its voltage regulation system, and be able
to respond to transmission system voltage fluctuations.
(3) For the purposes of subsection 6(1), a short term reactive power capability for a period of
up to one (1) second will be deemed to meet the dynamic reactive power capability set out in
that subsection 6(1).
(4) The short term reactive power capability referred to in this subsection 6 does not qualify
for continuous reactive power described in subsection 5.
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Non-Dynamic Reactive Power Capability
7(1) For any wind generating facilities, the MVAr size of the individual shunt reactive power
devices under control of the voltage regulation system must not be larger than the total
range of the continuous capability of dynamic reactive power set forth in subsection 6.
(2) Any shunt reactive power device installed in any wind generating facilities must be
capable of being switched on no later than five (5) minutes after having been switched off.
Voltage Regulation System
8(1) Wind generating facilities must have a continuously variable, continuously acting,
closed loop, centralized control voltage regulation system that measures voltage compared
to a set point, and will control reactive devices such as wind turbine generators, static VAr
devices, capacitor and reactor banks, or any or all of them.
(4)
2) The voltage regulation system must be continuously in service and controlling
while the wind aggregated generating facilities are connected to the transmission system,
and regardless of the quantity of actual MW output from the wind aggregated generating
facilities.
(5)
3) The voltage regulation system set point must be adjustable by the operator of the
wind aggregated generating facilities to a percentage between ninety five percent (95%)
and one hundred and five percent (105%) of rated voltage.
4) The voltage regulation system must operate in a voltage set point control mode to
(6)
the exclusion of any other modes.
5) The voltage regulation system must measure voltage that represents the overall
(7)
voltage response of the wind aggregated generating facilities.
(8)
6) The voltage regulating system must be capable of:
(a) adjustable gain, or reactive droop compensation adjustable from zero to ten
percent (0 to 10%); and
(b) reactive current compensation to compensate for the transmission system stepup transformer.
(7) The combined settings of the voltage regulation system must be able to achieve
(9)
a steady state voltage regulation of plus or minus zero point five percent (+/- 0.5%) of the
voltage controlled by the voltage regulation system.
(10) The (8) Prior to commissioning of any new wind generating facilities, the ISO will
specify whether the reactive current power compensation in the voltage regulation
system must be implemented and once specified, it will form part of the functional
specification..
(11) 9) The ISO may, upon no less than ninety (90) days notice in writing to the legal
owner of any commissionedoperational wind aggregated generating facilities, require a
change to the setting of the reactive droop compensation gain or the reactive current
compensation settings for commissionedthose wind aggregated generation facilities.
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(12) (10) The voltage regulation system must be calibrated such that a change in
reactive power will achieve ninety five percent (95%) of its final value, no sooner than zero
point one (0.1) seconds and no later than one (1) second following a step change in voltage.
(13) (11) When the voltage regulation system requires the switching of a shunt reactive
device, the switching operation must be delayed by ten (10) seconds.
External Voltage Regulation
7
9 No wind aggregated generating facilities may use or rely upon any voltage
regulation system or and reactive power resources that are external to the wind
aggregated generating facilities without first having the approvalISO review and approve of
the ISO and once approved by the ISO will form part of the functional specification for the
project.
Wind Aggregated Generating Facilities Reactive Power Capability
8(1) Dynamic and non-dynamic reactive power requirements must be based on the rated
voltage at the collector busses.
(2)
The capability of any wind aggregated generating facilities to supply reactive power
must meet or exceed plus zero point nine (+0.9) power factor, based on the gross real
power up to and including the maximum authorized real power of the wind aggregated
generating facilities.
(3)
The capability of the wind aggregated generating facilities to absorb reactive power
must meet or exceed minus zero point nine five ( -0.95) power factor, based on the gross
real power up to and including the maximum authorized real power of the wind aggregated
generating facilities.
(4)
Continuous reactive power capability referred tomatter in subsections 9 and 10 may
be aggregated to meet the requirements set out in subsections 8(1) and (2)writing.
(5)
All reactive power resources used to vary the wind generating facilities’ output of
reactive power within the requirements set out in subsections 8(1) and (2) must be under
control of a voltage regulation system.
(6)
The operator must not intentionally, and the control systems of wind aggregated
generating facilities must not be designed to, reduce the reactive power capability from the
dynamic reactive devices described in subsection 9, or the non-dynamic reactive devices
described in subsection 10.
Dynamic Reactive Power Capability
9(1) The dynamic reactive power capability of any wind aggregated generating facilities
must meet or exceed plus zero point nine five (+0.95) power factor based on the gross real
power up to and including the maximum authorized real power of the wind aggregated
generating facilities.
(2)
The dynamic reactive power capability of any wind aggregated generating facilities
must meet or exceed minus zero point nine eight five (-0.985) power factor based on the
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ISO Rule – Wind Technical Requirements
gross real power up to and including the maximum authorized real power of the wind
aggregated generating facilities.
(3)
Wind aggregated generating facilities must have reactive power resources that are
continuously acting and continuously variable under control of its voltage regulation system,
and be able to respond to transmission system voltage fluctuations.
(4)
For the purposes of subsections 9(1) and (2), a short term reactive power capability
for a period of up to one (1) second will be deemed to meet the dynamic reactive power
capability set out in those subsections.
(5)
The short term reactive power capability referred to in this subsection 9 does not
qualify for continuous reactive power described in subsection 8.
Non-Dynamic Reactive Power Capability
10(1) For any wind aggregated generating facilities, the MVAr size of the individual shunt
reactive power resources under control of the voltage regulation system must not be larger
than the total range of the continuous capability of dynamic reactive power set forth in
subsection 9.
(2)
Any shunt reactive power resources installed in any wind aggregated generating
facilities must be capable of being switched on no later than five (5) minutes after having
been switched off.
Operator Availability
11
10 The legal owner of any wind aggregated generating facilities must have a
designated and qualified operator available twenty four (24) hours a day every day for contact
and communication with the ISO, in accordance with ISO rules and other communication
policies and protocols.
WECC Stability Control Requirements
12
11 If the ISO is required by any WECC standards or policies specify the to use of a
power system stabilizer for any wind aggregated generating facilities using a
synchronous wind turbine generator and connected directly to the transmission system,
then the ISO in turn may require those wind aggregated generating facilities to use such a
power system stabilizer.
Operating Voltage Requirements and Range
12 The owner of any wind generating facilities must submit to the ISO the following
information and data which will form part of the functional specifications for those wind
generating facilities:
(a) a minimum through maximum transmission system voltage operating range; and
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ISO Rule – Wind Technical Requirements
(b) the value to be used for rated voltage of the transmission system at the point of
connection, based on the normal operating voltage levels at the specific location of
the wind generating facilities.
Transmission System Step-Up Transformer
13(1) The voltage ratio, tap changer type, range and step size specifications for any
transmission step-up transformer of any wind aggregated generating facilities must be such
that the reactive power requirements specified in subsection 84 are fully available throughout
the operating voltage range specified referred to in the functional specification.subsection 12.
(2)
The wind turbine generator step-up transformer and transmission system step-up
transformer connection for any wind aggregated generating facilities must be designed to
provide:
(a) a favorable circuit to block the transmission of harmonic currents;, and
(b) isolation of transmission system and wind turbine generator side ground fault
current contributions.
The wind aggregated generating facilities must utilize an effectively and solidly
(3)
grounded wye connection on the high side of the transmission system step up transformer.
Off Nominal Frequency Requirements
14(1) For wind aggregated generating facilities that have a requirement to protect
equipment for off-nominal frequency operation, the legal owner must install protective relays
so as to accommodate operation for the specified time frames shown in the Table set out in
Appendix 3.
(2)
The trip setting of the protective relays must either:
(a) be set to the requirements set out in Appendix 3 with respect to the frequency
versus time setting; or
(b) automatically trip load to match the anticipated generation loss and at comparable
frequency levels.
(3)
Any frequency relays installed to protect equipment for off-nominal frequency
operation The owner must:
(a) be only use solid state or microprocessor based; frequency relays in wind
generating facilities to provide off-nominal frequency protection.
(b) 4) Frequency relays must use a the definite time characteristic; and
(c) not be disabled for transmission system voltages that are below eighty percent
(80%) or higher of the rated voltage without the approval of the ISO and once
approved by the ISO will form part of the functional specification for the project.
(5) The ISO first must approve in writing if the operator of wind generating facilities intends
to permit a frequency relay to be automatically disabled if transmission system voltages fall
below eighty percent (80%) of nominal.
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Over Frequency Control Requirements
15(1) Any wind aggregated generating facilities must have an over frequency control
system that continuously monitors the frequency of the transmission system at a sample
rate of at least thirty (30) per second and a resolution of at least zero point zero zero four
(0.004) Hertz, and the over frequency control system must automatically control the gross
real power output of the wind aggregated generating facilities at all times.
(2)
The over frequency control system may have an intentional deadband of up to zero
point zero three six (0.036) Hertz.
The over frequency control system must be designed and calibrated to reduce the
(3)
gross real power output at the collector bus based on the capabilityreal time capacity of all
on-lineavailable wind turbine generators producing real power during an over frequency
excursion, and such reductions must be:;
(a) proportional to the frequency increase by a factor of thirty three percent (33%) per
Hertz of the above capacity;
(b) at a rate of five percent (5%) of the above capacity per second; and
(c) with no intentional time delay added to the control system.
(4)
In accordance with subsection 14, for transmission system over- frequency events
greater than sixty one point seven (61.7) Hertz, wind aggregated generating facilities may
trip due to the over- frequency, but if the wind aggregated generating facilities remain
connected to the transmission system then the frequency response system must continue to
ramp down the active power output in accordance with the requirementsprovision of this
subsection 15.
The over- frequency control requirements of this subsection 15 must have control
(5)
priority over the power limiting control function, and must reduce the gross real power output
for an over- frequency condition even when the requirements of this subsection 1718 are in
effect.
Wind Aggregated Generating Facilities Disconnection
16(1) Wind aggregated generating facilities must have systems, controls and related
procedures to electrically disconnect the wind aggregated generating facilities from the
transmission system either at:
(a) the point of connection; or
(b) the collector bus feeder breakers; or
both of them, as applicable.
(2)
Wind aggregated generating facilities connecting to a transmission facility must
provide the functionality and remote control capabilities to enable the operator of the
transmission facility to open or trip any interconnecting breaker either at the point of
connection or the collector bus feeder breakers, as applicable.
(3)
Once a connecting breaker or feeder breaker of any wind aggregated generating
facilities has been opened or tripped, then the operator may only electrically reconnect to the
transmission facility after receiving approval from the ISO.
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Wind Aggregated Generating Facilities Real Power and Ramp Rate Limitations
17(1) Wind aggregated generating facilities must have the control capability to limit the
real power output at the point of connection in accordance with any limits or instructions
contained in any a directive, and the in any event, that real power output must not exceed
the tolerances described in this subsection 17.
The real power control limit of the wind aggregated generating facilities referred to
(2)
in subsection 17(1) must be adjustable from the minimum operating output to the maximum
authorized real power,MW at an average resolution of one (1) MW.
(3)
When a real power limit at any wind aggregated generating facilities is in effect in
accordance with a directive and wind speed conditions at the wind aggregated generating
facilities are increasing, then subject to subsection 17(4)) below, the power limiting controls
of the wind aggregated generating facilities must be capable of keeping the one (1) minute
average real powerMW output from exceeding the wind aggregated generating facilities
limit specified in the directive by two percent (2%) of the maximum authorized real
powerMW.
(4)
If a wind gust results in the real power control limit set out in the directive being
instantaneously exceeded, the wind aggregated generating facilities will remain in
compliance if the real power output at the point of connection does not exceed the real
power control limit by more than five percent (5%) of the maximum authorized real
powerMW.
(5)
Wind aggregated generating facilities must be equipped with ramp rate limiting
controls.
The ramp rate limiting controls must be capable of limiting the rampramping up of the
(6)
real power of theany wind aggregated generating facilities, and must be adjustable such
that the ramp rate does not exceed, in MW per minute, a range equal to from five percent
(5%) of the maximum authorized real powerMW to twenty percent (20%) of the maximum
authorized real power.MW.
(7)
The default setting for the ramp rate limiting controls must be set at ten percent
(10%), unless otherwise approved specified by the ISO, and once approved will form part of
the functional specification for the project.
(8)
Any difference in the real power at the point of connection and the collector
busses must be compensated for in the real power limiting and ramp rate limiting controls.
Wind Aggregated Generating Facilities Protection Requirements
18(1) The legal owner of any wind aggregated generating facilities must comply with all
provisions in any ISO protection standards or ISO rules dealing with the subject matterof the
AIES Protection Standard Rev 0, December 1, 2004.
(2)
The protection requirements set out in subsection 18(1) extend to and include the
wind turbine generator, any step-up transformer, collector facilities and any transmission
system equipment required to connect the wind aggregated generating facilities to the
transmission system.
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Wind Aggregated Generating Facilities Power Quality
19(1) Wind aggregated generating facilities must be designed and operated to meet or
exceed the minimum power quality standards set out in this subsection 19.
(2)
19 Wind generating facilities must comply with all industry practices, standards and
guidelines for electricity quality not otherwise specifically set out in this Section 501.3.1.
Voltage Flicker
20 The voltage flicker for wind aggregated generating facilities must comply with the
specifications set outeither the maximum permissible voltage flicker limits as defined in
Appendix 4, or in International Electrotechnical Commission 61000-3-7, Electromagnetic
compatibility (EMC) – Part 3-7: Limits - Assessment of emission limits for the connection of
fluctuating installations to MV, HV and EHV power systems, as measured at the point of
connection. , whichever is lower.
(3
Harmonics
21(1) Upon request from the legal owner of any wind aggregated generating facilities, the
ISO must will provide a description of information describing the specific harmonic-impedance
envelope at a proposed point of connection for those wind aggregated generating
facilities.
2) The legal owner must complymitigate any harmonic currents resulting from non(4)
compliance with IEEE Standard 519,-1992 Recommended Practices and Requirements for
Harmonic Control in Electrical Power Systems, as measured at the point of connection.
(5)
Any wind aggregated
Voltage Unbalance Avoidance
22(1) Wind generating facilities must not cause any voltage unbalance on the transmission
system, calculated in accordance with subsection 22 (2), in excess of three percent (3%).
(2) The voltage unbalance will be calculated using the following formula:
Unbalance (%) = 100 x (deviation from average)
(average)
Avoidance of Undue Resonance
23 Any wind generating facilities must include systems and components designed to avoid
introducing undue resonance into the transmission system, with such design specifications
to apply to self-excitation of induction machines, transformer ferroresonance, resonant effects
of capacitor additions and the capacitance of the wind aggregated generating facilities’
collector cables.
(6)
Wind aggregated generating facilities must not cause any voltage unbalance on the
transmission system as measured at the point of connection in excess of the value
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ISO Rule – Wind Technical Requirements
designated by the ISO and specified in the functional specification for the project.
Grounding
20
24 Any wind aggregated generating facilities must be designed and constructed to
take in to account that the transmission system operates as an effectively and solidly
grounded system.
Lightning Surge Protection
21
25 The lightning surge protection for any substation facilities associated with any wind
aggregated generating facilities must be designed to take into account the average
isokeraunic level for the site location of the wind aggregated generating facilities, and to be
compatible with the connecting transmission facility to ensure coordination of insulation
levels.
Clearance and Access
2226(1)
All energized facilities and installations of any wind aggregated generating
facilities must be maintained at safe vertical and horizontal clearances, and otherwise must
meet the specifications and requirements set forth in this subsection 2226.
(2)
The connecting facilities of any wind aggregated generating facilities at a point of
connection must be designed and operate in compliance with the Canadian Electrical Code
Part I.
The facilities and installations of any transmission facility connecting with the wind
(3)
aggregated generating facilities at a point of connection must comply with The Alberta
Electrical and Communication Utility Code and any or all complementary or successor
applicable Alberta enactments or other ISO rules dealing with the subject matter.
Wind Power Facility Fault Interrupting Devices
2327(1)
AnyThe design of the connecting facilities of any wind aggregated generating
facilities must be designed to:
(a) account for the fault contributions from both the transmission system and the
wind aggregated generating facilities; and
(b) have fault interrupting and momentary withstand ratings that are adequate to meet
the maximum expected fault levels, with a margin for future anticipated fault levels
as approved by the ISO and once approved by the ISO will form part of the
functional specification for the project..
(2)
The wind aggregated generating facilities must not use or apply high voltage fuses
at sixty (60nine (69) kilovolts or higher due to the risks of reduced reliability, increased outage
times, single phasing and the possibility of ferroresonance.
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Wind Aggregated Generating Facilities Isolating Devices
2428(1)
Any wind aggregated generating facilities must be designeddesigned and
operate with manually operable isolation switches at all points of isolation as documented
indesignated by the ISO approved functional specification, after consultation with the legal
owner of the applicable transmission facility.
(2)
The isolation switches must permit visual verification of electrical isolation, and have
the capability of being locked open with multiple locks.
Special Connection Protections
25
In accordance with any applicable ISO rules and the market participant connection
process of the ISO, the ISO may require additional specific protection control or remedial
action scheme designs at the point of connection, and these requirements will be
documented in the ISO approved functional specification for the project.
(3) All isolating switches of the wind generating facilities must be under the control of either
the operator of the wind generating facilities, or the operator of the transmission facility.
(4) If the wind generating facilities contain isolating switches owned by both the owner of
the wind generating facilities and the owner of the transmission facility, then the owner of
the wind generating facilities must agree in writing with the owner of the transmission
facility as to who will control those isolating switches.
Special Interconnection Protections
29 The ISO, after consultations with the owner of any wind generating facilities, may require
in writing additional, remedial action schemes and other specific protection and controls for
the wind generating facilities at a proposed point of connection to ensure adequate, safe,
efficient and reliable protection of the interconnected electric system and the wind
generating facilities.
Revenue Metering
2630(1)
Any wind aggregated generating facilities must have revenue electric meter
facilities conforming to the AESO Measurement System Standard or any successor ISO
rules, to measure active energy and reactive energy flowing to and from the wind aggregated
generating facilities to the transmission system, and for submission of the resulting data
and records to the ISO.
(2) The revenue electric metering facilities must include instrument transformers dedicated for
metering purposes only, voltage transformers, current transformers, secondary wiring, test
switches, meters and a communication interface.
(3) All metering data must be submitted to the ISO in the format specified in the standard
referenced in subsection 30(1).
(4) At the point of connection, the meter installation facilities must be capable of measuring
real power imports and exports.
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ISO Rule – Wind Technical Requirements
Supervisory Control and Data Acquisition Requirements
27
31 In addition to complying with AESO SCADA Standard or any successor ISO
rulesRev 1 September 6, 2005 as amended from time to time, any wind aggregated
generating facilities must provide the following additional data:
(a)
voltage regulation system set-point;
(b) wind speed and direction, from a single point of measurement at the wind generating
facilities;
(b)
potential real power MW capability, the real power that would have been
produced at the point of connection without wind aggregated generating
facilities curtailment and based on real time meteorological conditions at each
available wind turbine generator;
(c)
real power limit, the MW limit used in the power limiting control system at
the wind aggregated generating facilities; and
(d)
on / off status for the wind power limiting control system at the wind
aggregated generating facilities.
Wind Power Data Collection Facility Requirements
2832(1)
Any wind aggregated generating facilities must have a meteorological data
collection tower and related facilities installed in accordance with the provisions of this
subsection 2832.
(2)
The meteorological tower referred to in subsection 2832(1) must be equipped with
two (2) weather measurement devices, one taking measurements at the wind turbine
generator hub height and the another taking measurements at a height thatspecified by the
ISO specifies:.
(a) in the functional specification for new wind aggregated generating facilities; or
(b) in writing for existing aggregated generating facilities.
(3)
The measurement devices must measure, on a ten (10) minute average value;
(a) wind speed in meters per second (m/s), precision for instantaneous measurements
to the nearest zero point one (0.1) meters per second;
(b) wind direction in degrees from true north, precision for instantaneous
measurements to the nearest one (1) degree;
(c) barometric pressure in HectoPascals (HPa), precision for instantaneous
measurements to the nearest six (6)-Pa; and
(d) ambient temperature in degrees Celsiuscelsius (◦C), precision for instantaneous
measurements to the nearest zero point one (0.1) degrees Celsius.celsius.
(4)
The legal ISO will specify in writing whether the owner must submit to the ISO the
data specified in this described in subsection 28 in the method and format the ISO specifies:
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ISO Rule – Wind Technical Requirements
(a) in the functional specification32 for any new the wind aggregated generating
facilities; or
(b) in writing for any wind aggregated generating facilities in existence as to the ISO
by means of the effective date of this section 502.1.systems referenced in
subsection 31, or an alternative means or path.
Wind Aggregated Generating Facilities Synchrophasor Measurement
29
Wind Power Facility Monitoring Equipment
33(1) Any wind aggregated generating facilities must have equipmenta monitor installed
for synchronized phasor measurements that complies with the specifications contained in the
AESO Requirements for Phasor Measurement Units, or any successor ISO rules dealing with
such subject matter.
(2)
Synchronized phasor measurements The monitor must take place at the following
points:
(a) be capable of measuring all three (3) phase to ground voltages and currents at
each collector bus of the wind aggregated generating facilities;
(b)
all three (3) phase currents and for each transmission step-up transformer on the low
voltage side.
(3) The monitor must be capable of the transformer; and
(c) measuring all three (3) phase to ground voltages and currents at each point of
connection of the wind aggregated generating facilities.
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Wind Aggregated Generating Facilities Testing Post Connection
3034(1)
Following connection of any wind aggregated generating facilities to the
transmission system, the legal owner must test those aggregated generating facilities
facilities must be tested by the owner in accordance with the provisions of subsection
3034(2),) below and must provide the test results and report must be provided as per the ISO
document “Requirements for Model Validation” no later than thirty (30) days following the date
upon which wind speed conditions reasonably will allow for the tests to be conducted.
(2)
The following specific tests must be completed:
(a) A voltage regulation system and reactive power response test, which
demonstrates the ability of the wind aggregated generating facilities to control
the collector bus and transmission system voltage in a stable manner, and
which test consists of injecting a test signal to the voltage reference point of the
voltage regulation system;
(b) A reactive power capability test, which demonstrates the ability of the wind
aggregated generating facilities to provide continuous reactive power in
accordance with the any applicable provisions of standards set out in the ISO
rules;
(c) A voltage set-point capability test, which demonstrates the ability of the wind
aggregated generating facilities to adjust the voltage set-point of the voltage
regulation system to any applicable provisions of standards set out in the ISO
rules;
(d) A harmonic test, as the ISO may require and ifbe required, will form part of by the
functional specification for the projectISO , which test will demonstrate that
harmonic levels for the wind aggregated generating facilities are within the
specifications set out in subsection 19(4); andlimits of IEEE 519; and
(e) A voltage flicker test, as the ISO may require and ifbe required, will form part of by
the functional specification for the projectISO, which test will demonstrateconfirm
that the flicker levels for the wind aggregated generating facilities are within the
specifications set out in subsection 19(2)21.
(3)
The ISO, by written notice, may require the legal owner of any wind aggregated
generating facilities to conduct or repeat the tests set out in this subsection if:
(a) there is evidence that the results of the tests do not correlate with the actual
response, except in instances where the lack of correlation was caused by
equipment problems that were subsequently corrected; or
(b) there are changes34 may be required to be re-conducted upon written request
from the ISO, and in any event, such retests must be done due to a change in any
applicable NERC or WECC policy or standards requirements.
Provision of Modelling Information
3135(1)
The legal In accordance with the Transmission Technical Modeling
Requirements of the ISO, t he owner of any wind aggregated generating facilities must
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ISO Rule – Wind Technical Requirements
provide to the ISO all reasonably requested data and records to allow for the modeling of the
wind turbine generators, transformers, collector systems, control systems and other
installations of the wind aggregated generating facilities.
(2)
Where an appropriate model is not available within Siemens’ PSS/E software, the
legal owner must supply a working user written PSS/E model.
(3)
If the legal owner supplies such a model is supplied to the ISO, then in addition, the
legal owner must provide a written model and compiled code of the model, and maintain the
user written model compatible with current and new releases of PSS/E until such time as the
legal owner provides a standard model is provided to the ISO.
(4) The legal owner must also (4) Any model submitted by an owner under this section 35
may be resubmitted by the ISO to the WECC and its members for interconnected system
studies.
(5) The owner in addition must provide the ISO with power system studies which demonstrate
that the wind aggregated generating facilities are capable of meeting the voltage ridethrough requirements specified in subsection 535(3).
(5)
6) The legal owner must provide the ISO with a wind turbine generator model with
validated data demonstrated by a physical performance test, on a sixty (60) Hertz system, of
at least one wind turbine generator for every type or model used at the wind generating
facilities.
(7) The owner in addition must provide a voltage regulation system model with validated
data demonstrated by a physical performance test of at least one (1) voltage regulation
system device used at the wind aggregated generating facilities.
(6)
8) The legal owner in addition must re-validate all model data if the ISO provides
written notice that there is evidence that the modeled response of the wind aggregated
generating facility does not correlate with the actual response, except in instances where the
lack of correlation was caused by equipment problems that were subsequently correctedfrom
time to time as requested by the ISO.
Wind Power Historical Data Facility Requirements
3236(1)
Any wind aggregated generating facilities must have meteorological
equipment which measuresand installations so as provide to the service provider as
designated by the ISO forecast data and records, which must include historical ten (10)
minute averaged meteorological data, containing details on wind speed, wind direction,
temperature and barometric pressure and which illustrate the height of the measurements.
(2)
The legal owner must provide the measurements and records referred to in
subsection 32(1) to the wind power forecasting service provider the ISO designates.
(3)
Upon the ISO’s written request, by the legal ISO, the owner of the wind aggregated
generating facilities must, subject to availability, provide historical data and records
referenced in subsection 3236(1) for up to two (2) calendar years prior to the commissioning
period of the wind aggregated generating facilities.
(4)
3) The legal owner of the wind aggregated generating facilities must provide the
ISO with wind turbine generator data and records, including hub height, turbine land
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ISO Rule – Wind Technical Requirements
coordinates, turbine power curves, high wind speed cut-out, and any applicable temperature
cut-outs.
(5)
4) The legal ISO will specify in writing how the owner must submit to the ISO the data
and records specified in this subsection 3236 for the wind aggregated generating facilities,
in a method and format the ISO specifies, which for new wind aggregated generating
facilities, the ISO will specify in the functional specifications.
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Appendices
Appendix 1
Voltage Ride Through Requirements
120%
Wind generating facilities may trip above high voltage requirement.
Voltage (Point of Connection) Percent of Rated
100%
Fault incidence at
time = 0 second.
80%
60%
Wind generating facilities may trip below
low voltage requirement.
40%
20%
15%
0%
-1
0
1
2
3
4
5
Time (Seconds)
Low Voltage Requirement
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High Voltage Requirement
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Appendix 2
Reactive Power Capability
-0.985 power
factor
at maximum
authorized real
power
+0.95 power
factor
at maximum
authorized real
power
Continuous Reactive Power
Capability
Dynamic Reactive Power
Capability
1.0
-0.95 power
factor
at maximum
authorized real
power
MW (per unit)
+0.9 power
factor
at maximum
authorized real
power
0.8
0.6
0.4
Absorbing MVArs per unit
0.6
0.484
0.4
0.2
0
0.2
0.328
0.4
0.6
0.2
Producing MVArs per unit
Where 1 per unit is the maximum authorized real power
Minimum continuous
reactive capability
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Minimum dynamic
reactive capability
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Appendix 3
Trip Settings of Off-Nominal Frequency Protective Relays
Frequency (Hz)
Minimum Time Delay
>61.7 Hz
0 seconds
61.6 Hz to 61.7 Hz
30 seconds
60.6 Hz to <61.6 Hz
3 minutes
>59.4 Hz to <60.6 Hz
Continuous Operation
>58.4 Hz to 59.4 Hz
3 minutes
>57.8 Hz to 58.4 Hz
30 seconds
>57.3 Hz to 57.8 Hz
7.5 seconds
>57.0 Hz to 57.3 Hz
45 cycles
≤57.0 Hz
0 seconds
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Appendix 4
Voltage Flicker Limits
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Revision History
Effective
####-##-##
Description
New Release
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