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75866RESERVE NOTICE02/06/2020 09:17
RESERVE NOTICE MT PASA PUBLICATION 02 June 2020
The MTPASA result published on 02 June 2020 identifies no Low Reserve Conditions.
Please note that MTPASA informs the market of potential reliability issues to allow the market to respond in the first instance, potentially avoiding the need for any market intervention or direction from AEMO.
For further information, please refer to:
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data/Market-Management-System-MMS/Projected-Assessment-of-System-Adequacy
This notice supersedes Market Notice 75825 published on 26 May 2020.
Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast expected unserved energy levels over a two year period. If the expected annual unserved energy exceeds the maximum level specified by the Reliability Standard, a Low Reserve Condition is identified.
For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Planning-and-forecasting/Reliability-Standard-Implementation-Guidelines
Forecasting
AEMO
Please note that MTPASA informs the market of potential reliability issues to allow the market to respond in the first instance, potentially avoiding the need for any market intervention or direction from AEMO.
For further information, please refer to:
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Data/Market-Management-System-MMS/Projected-Assessment-of-System-Adequacy
This notice supersedes Market Notice 75825 published on 26 May 2020.
Background
As part of a broader process of implementing the reliability standard, AEMO runs the Medium Term Projected Assessment of System Adequacy (MTPASA) process weekly to forecast expected unserved energy levels over a two year period. If the expected annual unserved energy exceeds the maximum level specified by the Reliability Standard, a Low Reserve Condition is identified.
For more information about how AEMO implements the reliability standard, please view the Reliability Standard Implementation Guidelines (RSIG) available on AEMO's website at
https://www.aemo.com.au/Electricity/National-Electricity-Market-NEM/Planning-and-forecasting/Reliability-Standard-Implementation-Guidelines
Forecasting
AEMO
75865NON-CONFORMANCE01/06/2020 05:15
NON-CONFORMANCE Region QLD1 Monday, 1 June 2020
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Monday, 1 June 2020
AEMO declared a schedule generating unit non-conforming
Unit: YABULU
Duration: 01/06/2020 17:00 to 01/06/2020 17:15
Amount: -17 MW
Constraint: NC-Q_YABULU
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Monday, 1 June 2020
AEMO declared a schedule generating unit non-conforming
Unit: YABULU
Duration: 01/06/2020 17:00 to 01/06/2020 17:15
Amount: -17 MW
Constraint: NC-Q_YABULU
Auto-generated on behalf of Manager NEM Real Time Operations
75864MARKET INTERVENTION01/06/2020 02:32
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region 29/05/2020
AEMO ELECTRICITY MARKET NOTICE
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region 29/05/2020
Refer Market Notice 75850
The AEMO Intervention Event and all associated directions are cancelled from 1430 hrs 01/06/2020
Manager NEM Real Time Operations
Cancellation - AEMO Intervention Event - Intervention dispatch intervals - Direction SA region 29/05/2020
Refer Market Notice 75850
The AEMO Intervention Event and all associated directions are cancelled from 1430 hrs 01/06/2020
Manager NEM Real Time Operations
75862INTER-REGIONAL TRANSFER01/06/2020 12:57
Cancellation - Inter -regional transfer limit variation - Constraint automation to Manage Power System Security in Vic Region - 01/06/2020
AEMO ELECTRICITY MARKET NOTICE
Cancellation - Inter -regional transfer limit variation - Constraint automation to Manage Power System Security in Vic Region - 01/06/2020
Refer AEMO Electricity Market Notice 75861
AEMO has revoked an automated constraint set CA_BRIS_4DE6DCA9 at 1245 hrs
This constraint set contains equations with the following interconnector on the LHS;
V-S-MNSP1
Manager NEM Real Time Operations
Cancellation - Inter -regional transfer limit variation - Constraint automation to Manage Power System Security in Vic Region - 01/06/2020
Refer AEMO Electricity Market Notice 75861
AEMO has revoked an automated constraint set CA_BRIS_4DE6DCA9 at 1245 hrs
This constraint set contains equations with the following interconnector on the LHS;
V-S-MNSP1
Manager NEM Real Time Operations
75861INTER-REGIONAL TRANSFER01/06/2020 11:04
Inter -regional transfer limit variation - Constraint automation to Manage Power System Security in Vic Region - 01/06/2020
AEMO ELECTRICITY MARKET NOTICE
Inter -regional transfer limit variation - Constraint automation to Manage Power System Security in Vic Region - 01/06/2020
In order to maintain the power system in a secure operating state and manage CA violations in the Vic Region,
AEMO has invoked the following automated constraint sets:
CA_BRIS_4DE6D9E8 from 1035 hrs until 1045 hrs
CA_BRIS_4DE6DCA9 from 1045 hrs until 1800 hrs
These constraint sets contains equations with the following interconnector on the LHS;
V-S-MNSP1
Manager NEM Real Time Operations
Inter -regional transfer limit variation - Constraint automation to Manage Power System Security in Vic Region - 01/06/2020
In order to maintain the power system in a secure operating state and manage CA violations in the Vic Region,
AEMO has invoked the following automated constraint sets:
CA_BRIS_4DE6D9E8 from 1035 hrs until 1045 hrs
CA_BRIS_4DE6DCA9 from 1045 hrs until 1800 hrs
These constraint sets contains equations with the following interconnector on the LHS;
V-S-MNSP1
Manager NEM Real Time Operations
75860RECLASSIFY CONTINGENCY01/06/2020 07:51
Cancellation of the reclassification of a Non-Credible Contingency Event: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines in SA due to severe weather warning.
AEMO ELECTRICITY MARKET NOTICE.
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly, its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 0730 hrs 01/06/2020
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 75856
Manager NEM Real Time Operations
Cancellation of the reclassification of a non-credible contingency event as a credible contingency event due to severe weather warning.
AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any severe weather warning in the vicinity of the following lines. Accordingly, its classification has reverted to a non-credible contingency event.
Region: SA
Lines: Brinkworth-Davenport, Brinkworth-Templers West and Para-Templers West 275kV lines
Cancellation time: 0730 hrs 01/06/2020
Constraint set(s) revoked: Nil
Refer AEMO Electricity Market Notice 75856
Manager NEM Real Time Operations
75859GENERAL NOTICE01/06/2020 07:42
AEMO ELECTRICITY MARKET NOTICE.
Abnormal conditions advised in AEMO Electricity Market Notice 75857 have ceased to impact the likelihood of a non-credible event occurring as at 0730 hrs 01/06/2020.
Constraint set I-VS_250 revoked at 0730 hrs.
Manager NEM Real Time Operations
Cancellation - Non-credible contingency event more likely to occur due to existence of abnormal conditions - SA region
AEMO ELECTRICITY MARKET NOTICE.
Abnormal conditions advised in AEMO Electricity Market Notice 75857 have ceased to impact the likelihood of a non-credible event occurring as at 0730 hrs 01/06/2020.
Constraint set I-VS_250 revoked at 0730 hrs.
Manager NEM Real Time Operations
75858INTER-REGIONAL TRANSFER01/06/2020 07:10
Cancellation - Inter-regional transfer limit variation: Hazelwood - South Morang No.2 500 kV Line (Vic) - Voltage Control
AEMO ELECTRICITY MARKET NOTICE
Cancellation - Inter-regional transfer limit variation: Hazelwood - South Morang No.2 500 kV Line (Vic) - Voltage Control
Refer AEMO Electricity Market Notice 75855
The Hazelwood - South Morang No.2 500 kV Line has been returned to service.
The following constraint set was revoked at 0610 hrs 01/062020.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-S-MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations
Cancellation - Inter-regional transfer limit variation: Hazelwood - South Morang No.2 500 kV Line (Vic) - Voltage Control
Refer AEMO Electricity Market Notice 75855
The Hazelwood - South Morang No.2 500 kV Line has been returned to service.
The following constraint set was revoked at 0610 hrs 01/062020.
V-HWSM
The constraint set contains equations with the following interconnectors on the LHS.
T-V-MNSP1
V-S-MNSP1
V-SA
VIC1-NSW1
Manager NEM Real Time Operations
75857GENERAL NOTICE31/05/2020 10:06
Non-credible contingency event more likely to occur due to existence of abnormal conditions - SA region
AEMO ELECTRICITY MARKET NOTICE.
AEMO has identified that a non-credible contingency event is more likely to occur because of the existence of abnormal conditions, namely damaging winds in the South Australia region.
As at the time of this notice the criteria for reclassification of any non-credible contingency event have not been met, however there is a possibility of severe weather impacting multiple transmission elements in its vicinity.
Conditions can change rapidly and potentially impacted plant may change. Further notices will only be published to advise of any reclassification, or when the abnormal conditions have ceased to impact the likelihood of a non-credible event occurring.
Constraint set I-VS_250 invoked at 2205 hrs 31/05/2020 until further notice.
Manager NEM Real Time Operations
AEMO has identified that a non-credible contingency event is more likely to occur because of the existence of abnormal conditions, namely damaging winds in the South Australia region.
As at the time of this notice the criteria for reclassification of any non-credible contingency event have not been met, however there is a possibility of severe weather impacting multiple transmission elements in its vicinity.
Conditions can change rapidly and potentially impacted plant may change. Further notices will only be published to advise of any reclassification, or when the abnormal conditions have ceased to impact the likelihood of a non-credible event occurring.
Constraint set I-VS_250 invoked at 2205 hrs 31/05/2020 until further notice.
Manager NEM Real Time Operations