Download Generator Performance Standards

APPLICATION FOR REGISTRATION AS A GENERATOR
GENERATOR PERFORMANCE STANDARDS
The following tables contain the information AEMO requires to assess compliance with the performance standards for the generating unit/generating system
in respect of which the applicant seeks registration as a Generator. The applicant for registration as a Generator must complete this document and submit it
with its application for connection.
Following acceptance of the performance standards by the connecting Network Service Provider and AEMO (where required) this document must be
included with an application for registration as a Generator. All technical enquiries on this form should be directed to [email protected].
Applicants should complete columns three and four in Table 2 to describe the performance standards.
Applicants should indicate in the third column whether the generating unit or generating system meets the automatic access standard (A) or whether a
negotiated access standard (N) has been agreed.
The fourth column has been pre-filled by AEMO and provides details of each automatic access standard as a guide.
Amend Table 2 as necessary to reflect the agreed performance standard, and respond to the comments provided in square brackets ([]).
Table 1 Background
Name Applicant & ABN:
[insert company name and ABN of applicant for registration as a Generator]
Name of Network Service Provider & ABN:
[insert company name and ABN of NSP]
Name of generating system:
[insert name of power station / generating system]
Generating unit designations:
[insert unit designations e.g. Units 1 to 4]
Connection point:
[insert connection point/s]
Connection point nominal voltage:
[insert connection point nominal voltage] kV
Connection point normal voltage
[insert connection point normal voltage] p.u. or kV
Nameplate rating:
[Insert the nameplate rating of all generating units this document applies to] MW
Maximum capacity:
[Insert maximum generation of the generating system, that is, the total capacity of all generating units this document applies to] MW
Date of Application:
[insert date finalisation of this document]
DOCUMENT1
DECEMBER 2016
PAGE 1
APPLICATION FOR REGISTRATION AS A GENERATOR
S5.2.5.1
DESCRIPTION
Reactive Power Capability
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
Table 2 Performance Standards
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
Generating system’s rated active power = [Insert MW value], determined by [insert determination method or delete if not applicable]
While operating at any level of active power output and at any voltage at the connection point within the limits of ±10% of its normal
voltage, the generating system is capable of:

supplying at its connection point an amount of reactive power of at least equal to the product of the rated active power of the
generating system and 0.395;

absorbing at its connection point an amount of reactive power of at least equal to the product of the rated active power of the
generating system and 0.395.
[Insert reactive power capability diagram]
[For generating systems taking auxiliary supply from the network via the generating system’s connection point, delete if not applicable]
The generating system, while not supplying or absorbing reactive power under an ancillary services agreement will draw electricity with
a power factor in the range [Insert value, lead/lag] to [Insert value, lead/lag].
S5.2.5.2
S5.2.5.3
Quality of Electricity Generated
Generating Unit Response to
Frequency Disturbance
When generating and when not generating, the generating system does not produce at any of its connection points for generation:

Voltage fluctuation greater than [Insert the limits allocated by the NSP in accordance with clause S5.1.5(a) of the Rules];

Harmonic voltage distortion greater than [Insert the limits allocated by the NSP] in accordance with clause S5.1.6(a) of the
Rules]; and

Voltage unbalance greater than [Insert the limits allocated by the NSP in accordance with clause S5.1.7(c) of the Rules].
Unless the rate of change of frequency is outside the range of ±4Hz/s for more than 0.25s, the generating system and each of its
generating units is capable of continuous uninterrupted operation for frequencies in the following ranges:
[delete the column that is not applicable to your facility]
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Frequency range (Hz)
Frequency range (Hz)
[Mainland, delete column not
applicable]
[Tasmania, delete column not
applicable]
47 to 49
47 to 48
2 minutes
49 to 49.5
48 to 49
10 minutes
49.5 to 50.5
49 to 51
continuous
DECEMBER 2016
Duration
PAGE 2
S5.2.5.4
DESCRIPTION
Generating System Response to
Voltage Disturbances
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
50.5 to 51
51 to 52
10 minutes
51 to 52
52 to 55
2 minutes
The generating system and each of its generating units is capable of continuous uninterrupted operation within the following range of
voltages for the given duration at its connection point:

Voltages over 110% for the duration as permitted in the graph below (derived from clause S5.1a.4);
1.35
Voltage (per unit, normal voltage)
1.3
1.25
1.2
1.15
1.1
1.05
1
0.01
0.1
1
10
100
1000
Time (seconds)
 90% to 110% of normal voltage continuously;
 80% to 90% of normal voltage for a period of at least 10 seconds; and
DOCUMENT1
DECEMBER 2016
PAGE 3
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
 70% to 80% of normal voltage for a period of at least 2 seconds.
[Insert any operational arrangements necessary to ensure the generating system and each of its generating units will meet these levels
under abnormal network or generating system conditions].
S5.2.5.5
Generating System Response to
Disturbances following
Contingency Events
For the purposes of this performance standard a fault includes:
(1) a fault of the relevant type having a metallic conducting path; and
(2) a fault of the relevant type resulting from reclosure onto a fault by the operation of automatic reclose equipment.
Transmission system fault clearance time:
Primary protection system, [Insert time in milliseconds]ms;
Breaker fail protection system, [Insert time in milliseconds]ms;
Automatic reclose equipment, [Insert characteristics (single phase and three phase, if fitted), dead time in seconds, number of
reclose shots, reclaim time in seconds].
Distribution system fault clearance time:
Primary protection system, [Insert time in milliseconds]ms;
Breaker fail protection system, [Insert time in milliseconds]ms;
Automatic reclose equipment, [Insert characteristics (single phase or three phase), number of reclose shots, dead time in
seconds, reclaim time in seconds]
[Note – specify clearance times as per Table S5.1a.2 or as applicable in the local network, whichever is the longest]
The generating system and each of its generating units will remain in continuous uninterrupted operation for a disturbance caused by
an event that is:
i.
A credible contingency event other than a fault referred to in sub-paragraph (iv);
ii.
A three-phase fault in a transmission system cleared by all relevant primary protection systems;
iii.
A two-phase-to-ground, phase-to-phase or phase-to-ground fault in the transmission system cleared in:
(A) the longest time expected to be taken for a relevant breaker fail protection system to clear the fault; or
(B) if a breaker fail protection system is not installed, the greater of the time specified in the table below
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Nominal voltage at fault location (kV)
Time (milliseconds)
≥ 400kV
175
≥ 250kV and < 400kV
250
DECEMBER 2016
PAGE 4
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
> 100kV and < 250kV
430
≤ 100kV
430
and the longest time expected to be taken for all relevant primary protection systems to clear the fault; and
[delete (A) or (B) and insert values]
iv.
a three-phase, two-phase-to-ground, phase-to-phase or phase-to-ground fault in a distribution network cleared in:
(A) the longest time expected to be taken for a relevant breaker fail protection system to clear the fault; or
(B) if a breaker fail protection system is not installed, the greater of 430ms and the longest time expected to be taken for all
relevant primary protection systems to clear the fault.
[delete (A) or (B) and insert values]
These requirements do not apply to faults that disconnect the generating system from the power system by removing network elements
from service.
Unless one or more of the following conditions applies (Exception):
 [Specify any changed power system conditions or energy source availability conditions to be excluded],
The generating system and each of its generating units in respect of fault types described in subparagraphs (ii) to (iv), will supply or
absorb from the network:

capacitive reactive current of at least the greater of its pre-disturbance reactive current and 4% of the maximum continuous
current of the generating system including all generating units (in the absence of a disturbance) for each 1% reduction (from its
pre-fault level) of connection point voltage during the fault;

after disconnection of the faulted element, reactive power sufficient to ensure that the connection point voltage is within the
range for continuous uninterrupted operation under the performance standard agreed under clause S5.2.5.4 of the Rules (see
above); and

from 100ms after disconnection of the faulted element, active power of at least 95% of the level existing just prior to the fault.
If an Exception applies:

S5.2.5.6
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Quality of Electricity Generated
and Continuous Uninterrupted
[Insert any operational arrangements necessary to ensure the generating system and each of its generating units will meet its
agreed performance levels under abnormal network or generating system conditions].
The generating system and each of its operating generating units and reactive plant, will not disconnect from the power system for
voltage fluctuation, harmonic voltage distortion and voltage unbalance at the connection point within the levels specified:
DECEMBER 2016
PAGE 5
DESCRIPTION
Operation
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(i)
For voltage fluctuations at the connection point, in the "compatibility levels" set out in Table 1 of Australian Standard AS/NZS
61000.3.7:2001.
(ii)
For harmonic voltage distortion at the connection point, in the “compatibility levels” defined in Table 1 of Australian Standard
AS/NZS 61000.3.6:2001.
(iii)
a negative sequence voltage at the connection point, in Table S5.1a.1 of the Rules and shown below.
Nominal Supply
Voltage (kV)
Maximum Negative Sequence Voltage (% of nominal voltage)
No Contingency
Event
Credible
Contingency
Event
General
Once Per Hour
30 Minute
Average
30 Minute
Average
10 Minute
Average
1 Minute
Average
> 100
0.5
0.7
1.0
2.0
> 10 and ≤ 100
1.3
1.3
2.0
2.5
<10
2.0
2.0
2.5
3.0
[Delete rows for voltage levels not applicable]
S5.2.5.7
Partial Load Rejection
S5.2.5.8
Protection of Generating Units
from Power System
Disturbances
Each generating unit is capable of continuous uninterrupted operation during and following a power system load reduction of 30% from
its predisturbance level or equivalent impact from separation of part of the power system in less than 10s, provided that the loading
level remains above minimum load, PMIN = [insert value for minimum load].
(a)
Subject to paragraphs (b) and (e) where the generating system is required by the NSP or the Generator to be automatically
disconnected from the power system in response to abnormal conditions arising from the power system, the relevant protection
system or control system does not disconnect the generating system for:
(i)
conditions for which it must remain in continuous uninterrupted operation; or
(ii) conditions it must withstand under the Rules.
(b)
[delete all of paragraph (b) if generating system is <30MW or distribution connected] The generating system has facilities to
automatically and rapidly reduce its generation:
[delete non-applicable paragraphs below, include any limitations e.g. minimum generation level]
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DECEMBER 2016
PAGE 6
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(i)
(ii)
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by at least half, if the frequency at the connection point exceeds a level nominated by AEMO (not less than the upper
limit of the operational frequency tolerance band) and the duration above this frequency exceeds a value nominated by
AEMO [insert frequency and duration nominated by AEMO] where the reduction may be achieved by [delete (A) or (B)]:
(A)
reducing the output of the generating system within 3s, and holding the output at the reduced level until the
frequency returns to within the normal operating frequency band; or
(B)
disconnecting the generating system from the power system within 1s; or
in proportion to the difference between the frequency at the connection point and a level nominated by AEMO (not less
than the upper limit of the operational frequency tolerance band) [insert frequency nominated by AEMO] such that the
generation is reduced by at least half within 3s of the frequency reaching the upper limit of the extreme frequency
excursion tolerance limits.
(c)
[Delete paragraph (c) if AEMO or the NSP do not require the generating system to be automatically disconnected by a local or
remote control scheme whenever the part of the network to which it is connected has been disconnected from the national grid,
forming an island that supplies a Customer.]
(d)
The access standard must include specification of conditions for which the generating unit or generating system must trip and
must not trip. [Specify protection schemes and corresponding settings and also address “General requirements” as outlined in
clause S5.2.5.8 of the Rules].
(e)
Notwithstanding the performance standards agreed under clauses S5.2.5.3, S5.2.5.4, S5.2.5.5, S5.2.5.6 and S5.2.5.7 of the
Rules, (see above) the generating system may be automatically disconnected from the power system under any of the following
conditions:
(1)
in accordance with an ancillary services agreement dated [insert date] between the Generator and AEMO for the provision
of [insert type of ancillary services] [delete if no ancillary services agreement exists]
(2)
where a load that is not part of the generating system has the same connection point as the generating system and AEMO
and the NSP agree that the disconnection would in effect be under-frequency load shedding; [delete if none exists]
(3)
where the generating system is automatically disconnected under paragraphs (a), (b) or the performance standards agreed
under clause S5.2.5.9 of the Rules (see below) ;
(4)
where the generating system is automatically disconnected under the performance standard agreed under clause
S5.2.5.10 of the Rules (see below) due to a failure of the generating plant.
(5)
in accordance with an agreement between the Generator and a NSP (including an agreement in relation to an emergency
control scheme under clause S5.1.8 of the Rules) to provide a service that AEMO agrees is necessary to maintain or
restore power system security in the event of a specified contingency event. [delete if none exists]
DECEMBER 2016
PAGE 7
S5.2.5.9
DESCRIPTION
Protection Systems that Impact
on Power System Security
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
The generating system has primary protection systems to disconnect from the power system any faulted element within the generating
system and in the protection zones that include the connection point, within the following fault clearance times, [insert fault clearance
times determined under clause S5.1.9(a)(1) of the Rules, but subject to clauses S5.1.9(k) and S5.1.9(l) of the Rules].
Each primary protection system has sufficient redundancy to ensure that a faulted element within its protection zone is disconnected
from the power system within the applicable fault clearance time with any single protection element (including any communications
facility upon which that protection system depends) out of service.
Breaker fail protection systems are provided to clear faults that are not cleared by the circuit breakers controlled by the primary
protection system, within the following fault clearance times: [insert fault clearance times determined under clause S5.1.9(a)(1) of the
Rules]
[Address “General requirements” as outlined in clause S5.2.5.9 of the Rules]
S5.2.5.10
Protection to Trip Plant for
Unstable Operation
[If the generating system is synchronous, the first paragraph applies; if it is asynchronous, the second applies. Delete the inapplicable
paragraph and then complete the applicable one by specifying the type of protection system installed.]
Each synchronous generating unit has the following protection system to disconnect it promptly when a condition that would lead to
pole slipping is detected in order to prevent pole slipping or other conditions where a generating unit causes active power, reactive
power or voltage at the connection point to become unstable as assessed in accordance with the power system stability guidelines
established under clause 4.3.4(h) of the Rules:

[Specify the type of protection system installed, e.g. loss of field, reverse power, etc.]
Each asynchronous generating system has the following protection system to disconnect it promptly for conditions where the active
power, reactive power or voltage at the connection point becomes unstable as assessed in accordance with the power system stability
guidelines established under clause 4.3.4(h) of the Rules:

S5.2.5.11
Frequency Control
[Specify the type of protection system installed and the corresponding operating time]
‘Maximum operating level’ = [Insert MW value].
‘Minimum operating level’ = [Insert MW value].
The method of determination of the minimum operating level and maximum operating level has taken into account the generating
system’s in-service generating units, where relevant.
‘
The generating system’s active power transfer to the power system will not:
(i)
DOCUMENT1
increase in response to a rise in system frequency; or
DECEMBER 2016
PAGE 8
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(ii)
decrease in response to a fall in system frequency.
The generating system is capable of automatically reducing its active power transfer to the power system:
(i)
whenever the system frequency exceeds the upper limit of the normal operating frequency band;
(ii)
by an amount that equals or exceeds the least of:
(iii)
(A)
20% of its maximum operating level times the percentage frequency difference between system frequency and the
upper limit of the normal operating frequency band;
(B)
10% of its maximum operating level; and
(C)
the difference between the generating unit's pre-disturbance level and minimum operating level, but zero if the
difference is negative; and
sufficiently rapidly for the Generator to be in a position to offer measurable amounts of lower services to the spot market for
market ancillary services.
The generating system is capable of automatically increasing its active power transfer to the power system: [this requirement may be
deleted for intermittent generating systems]
(i)
whenever the system frequency falls below the lower limit of the normal operating frequency band;
(ii)
by the amount that equals or exceeds the least of:
(iii)
(A)
20% of its maximum operating level times the percentage frequency difference between the lower limit of the normal
operating frequency band and system frequency;
(B)
5% of its maximum operating level; and
(C)
one third of the difference between the generating system’s maximum operating level and pre-disturbance level, but
zero if the difference is negative; and
sufficiently rapidly for the Generator to be in a position to offer measurable amounts of raise services to the spot market for
market ancillary services.
Each control system used to satisfy this performance standard (for frequency control) is adequately damped.
The amount of relevant market ancillary service for which the plant is registered will not exceed the amount that would be consistent
with this performance standard.
S5.2.5.12
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Impact on Network Capability
The generating system has plant capabilities and control systems that are sufficient so that when connected to the power system it
does not reduce any inter-regional or intra-regional power transfer capability below the level that would apply if the generating system
were not connected.
DECEMBER 2016
PAGE 9
S5.2.5.13
DESCRIPTION
Voltage and Reactive Power
Control
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(1) The generating system has plant capabilities and control systems sufficient to ensure that:
(i)
power system oscillations, for the frequencies of oscillation of the generating unit against any other generating unit, are
adequately damped;
(ii)
operation of the generating system does not degrade the damping of any critical mode of oscillation of the power system; and
(iii)
operation of the generating system does not cause instability (including hunting of tap-changing transformer control systems)
that would adversely impact other Registered Participants;
(2) the control system used with this generating system has:
(i)
for the purposes of disturbance monitoring and testing, permanently installed and operational, monitoring and recording
facilities for key variables including each input and output; and
(ii)
facilities for testing the control system sufficient to establish its dynamic operational characteristics;
[If the generating system is synchronous, paragraph (3) applies; if it is asynchronous, paragraph (4) applies. Delete the inapplicable
paragraph and then complete the applicable one by specifying the type of voltage and reactive power control system installed.]
(3) each synchronous generating unit has an excitation control system that [delete this paragraph (3) if it is not applicable]:
(i)
regulates voltage at the connection point or [Specify agreed location in the power system (including within the generating
system)] to within 0.5% of the setpoint;
(ii)
is able to operate the stator continuously at 105% of nominal voltage with rated active power output;
(iii)
regulates voltage in a manner that helps to support network voltages during faults and does not prevent the NSP from
achieving the requirements of clause S5.1a.3 and S5.1a.4 of the Rules;
(iv)
allows the voltage setpoint to be continuously controllable in the range of at least 95% to 105% of normal voltage at the
connection point or the agreed location in the power system, without reliance on a tap-changing transformer;
(v)
has limiting devices to ensure that a voltage disturbance does not cause the generating unit to trip at the limits of its operating
capability;
(vi)
has an excitation ceiling voltage of at least: [delete whichever not applicable]
(A)
for a static excitation system, 2.3 times; or
(B)
for other excitation control systems, 1.5 times,
the excitation required to achieve generation at the nameplate rating for rated power factor, rated speed and nominal voltage;
(vii)
has settling times for a step change of voltage setpoint or voltage at the location agreed in paragraph (3)(i) of:
(A)
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generated voltage less than 2.5 seconds for a 5% voltage disturbance with the generating unit not synchronised;
DECEMBER 2016
PAGE 10
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(B)
active power, reactive power and voltage less than 5.0 seconds for a 5% voltage disturbance with the generating unit
synchronised, from an operating point where the voltage disturbance would not cause any limiting device to operate; and
(C)
in respect of each limiting device, active power, reactive power and voltage less than 7.5 seconds for a 5% voltage
disturbance with the generating unit synchronised, when operating into a limiting device from an operating point where a
voltage disturbance of 2.5% would just cause the limiting device to operate;
(viii) is able to increase field voltage from rated field voltage to the excitation ceiling voltage in less than:
0.05 second for a static excitation system; or
(B)
0.5 second for other excitation control systems;
(ix)
has a power system stabiliser with sufficient flexibility to enable damping performance to be maximised, with characteristics as
described in paragraph (5); and
(x)
has reactive current compensation settable for boost or droop; and
(4)
the generating system, other than one comprised of synchronous generating units, has a voltage control system that [delete this
paragraph (4) if not applicable]:
(i)
regulates voltage at the connection point or at [specify agreed location in the power system] (including within the generating
system) to within 0.5% of its setpoint;
(ii)
regulates voltage in a manner that helps to support network voltages during faults and does not prevent the NSP from
achieving the requirements of clauses S5.1a.3 and S5.1a.4 of the Rules;
(iii)
allows the voltage setpoint to be continuously controllable in the range of at least 95% to 105% of normal voltage at the
connection point or [Specify agreed location in the power system], without reliance on a tap changing transformer;
(iv)
has limiting devices to ensure that a voltage disturbance does not cause the generating unit to trip at the limits of its operating
capability;
(v)
with the generating system connected to the power system, has settling times for active power, reactive power and voltage
due to a step change of voltage setpoint or voltage at the location agreed under subparagraph (i), of less than:
(vi)
DOCUMENT1
(A)
(A)
5.0 seconds for a 5% voltage disturbance with the generating system connected to the power system, from an operating
point where the voltage disturbance would not cause any limiting device to operate; and
(B)
7.5 seconds for a 5% voltage disturbance with the generating system connected to the power system, when operating
into any limiting device from an operating point where a voltage disturbance of 2.5% would just cause the limiting device
to operate;
has reactive power rise time, for a 5% step change in the voltage setpoint, of less than 2 seconds;
DECEMBER 2016
PAGE 11
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(vii)
has a power system stabiliser with sufficient flexibility to enable damping performance to be maximised, with characteristics as
described in paragraph (5); and
(viii) has reactive current compensation.
(5) The power system stabiliser has [Delete paragraph (5) if power system stabiliser is not provided]:
(i)
for a synchronous generating unit, measurements of rotor speed and active power output of the generating unit as inputs, and
otherwise, measurements of power system frequency and active power output of the generating unit as inputs;
(ii)
two washout filters for each input, with ability to bypass one of them if necessary;
(iii) sufficient (and not less than two) lead-lag transfer function blocks (or equivalent number of complex poles and zeros) with
adjustable gain and time-constants, to compensate fully for the phase lags due to the generating plant;
(iv) an output limiter, which for a synchronous generating unit is continually adjustable over the range of –10% to +10% of stator
voltage;
(v) monitoring and recording facilities for key variables including inputs, output and the inputs to the lead-lag transfer function
blocks; and
(vi) facilities to permit testing of the power system stabiliser in isolation from the power system by injection of test signals, sufficient
to establish the transfer function of the power system stabiliser.
[Address “General requirements” as outlined in clause S5.2.5.13 of the Rules]
S5.2.5.14
Active Power Control
[Delete if the generating system is comprised of generating units with a total nameplate rating of less than 30 MW]
[Delete paragraph (1), (2) or (3), as applicable.]
(1) The scheduled generating system or scheduled generating unit [delete whichever not applicable] has an active power control
system that is adequately damped and capable of:
(i)
maintaining and changing its active power output in accordance with its dispatch instructions; and
(ii)
ramping its active power output linearly from one dispatch level to another.
(2) Subject to the energy source availability, the non-scheduled generating unit or non-scheduled generating system has an active
power control system that is adequately damped and capable of:
DOCUMENT1
(i)
automatically reducing or increasing its active power output within 5 minutes, at a constant rate, to or below the level specified
in an instruction electronically issued by a control centre, subject to subparagraph (iii),
(ii)
automatically limiting its active power output, to below the level specified in subparagraph (i); and
(iii)
not changing its active power output within 5 minutes by more than the raise and lower amounts specified in an instruction
DECEMBER 2016
PAGE 12
DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
electronically issued by a control centre.
(3) Subject to energy source availability, the semi-scheduled generating unit or semi-scheduled generating system [delete whichever
not applicable] has an active power control system that is adequately damped and capable of:
(i)
automatically reducing or increasing its active power output within 5 minutes at a constant rate, to or below the level specified
in an instruction electronically issued by a control centre;
(ii)
automatically limiting its active power output, to or below the level specified in subparagraph (i);
(iii)
not changing its active power output within 5 minutes by more than the raise and lower amounts specified in an instruction
electronically issued by a control centre; and
(iv)
S5.2.6.1
and 4.11.1
Remote Monitoring
ramping its active power output linearly from one level of dispatch to another.
[Delete paragraph (1), (2), (3), (4) or (5) as appropriate]
The generating system has remote monitoring equipment to transmit the following quantities to AEMO’s control centres in real time in
accordance with clause 4.11 of the Rules:
(1) in respect of a generating unit with a nameplate rating of 30 MW or more:
(i) current, voltage, active power and reactive power in respect of generating unit stators or power conversion systems (as
applicable);
(ii) the status of all switching devices that carry the generation, tap-changing transformer tap position;
(iii) provided AEMO has approved aggregation under clause 3.8.3 of the Rules, aggregate active power if; and
(2) in respect of a generating system that includes a generating unit with a nameplate rating of less than 30 MW:
(i) its connected status, tap-changing transformer tap position and voltages;
(ii) active power and reactive power aggregated for groups of identical generating units; and
(iii) either the numbers of identical generating units operating or the operating status of each non-identical generating unit; and
(iv) active power and reactive power for the generating system.
(3) in respect of an auxiliary supply system with a capacity of 30 MW or more associated with the generating unit or generating system,
active power and reactive power;
(4) in respect of reactive power equipment that is part of the generating system but not part of a particular generating unit, its reactive
power;
(5) in respect of a wind farm type of generating system:
(i) wind speed;
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DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
(ii) wind direction; and
(iii) ambient temperature;
and
(6) the following quantities reasonably required by AEMO to discharge its market and power system security functions as set out in
Chapters 3 and 4 of the Rules:
 Any quantity needed to meet the requirements of the Energy Conversion Model as agreed with AEMO.
[Note that there are standing and metered data requirements for semi-scheduled generating systems, refer to the SemiScheduled Energy Conversion Model Guidelines for wind and solar generating systems]
S5.2.6.2
and 4.11.3
Communications Equipment
The Generator will:
(1) provide and maintain two separate telephone facilities using independent telecommunications service providers, for the purposes
of operational communications between the Generator's responsible operator under clause 4.11.3(a) of the Rules and AEMO’s
control centre; and
(2) provide electricity supplies for remote monitoring equipment and remote control equipment installed in relation to its generating
system capable of keeping such equipment available for at least 3 hours following total loss of supply at the connection point for
the relevant generating unit.
S5.2.7
Power Station Auxiliary Supplies
[Only required if the generating system takes its auxiliary supplies via a connection point through which its generation is not transferred
to the network specify performance standard using clause S5.3.5 of the Rules as if the Generator were a Market Customer]
S5.2.8
Fault Current
The generating system limits its contribution to the fault current at the connection point to:
(a)
three phase fault current, [Insert value] kA;
(b)
single phase to ground fault current, [Insert value] kA;
(c)
phase to phase to ground fault current, [Insert value] kA,
[specify calculation basis as necessary]
The generating system’s connected plant is capable of withstanding fault current through the connection point up to:
(a)
three phase fault current [Insert value] kA;
(b)
single phase to ground fault current [Insert value] kA;
(c)
phase to phase to ground fault current [Insert value] kA,
for [Insert time] ms.
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DESCRIPTION
AUTOMATIC or
NEGOTIATED
STANDARD (A / N)
RULES
REFERENCE
RULES VERSION
APPLICATION FOR REGISTRATION AS A GENERATOR
DETAILED DESCRIPTION OF PERFORMANCE STANDARD
The circuit breaker provided to isolate the generating unit or generating system [delete unit/system as appropriate] from the network is
capable of breaking, without damage or restrike, the maximum fault current of [Insert value] kA, expected to flow through the circuit
breaker for any fault in the network or in the generating unit or generating system [delete unit/system as appropriate].
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