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Cancellation of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 due to Lightning.
Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.
Region: NSW1
Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Cancellation time: 28/11/2024 18:29
Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Refer AEMO Electricity Market Notice 121188
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: NSW1
Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV
Duration: 28/11/2024 17:27 until further notice
Constraint set(s) invoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
Auto-generated on behalf of Manager NEM Real Time Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 29/11/2024
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 121171 is cancelled at 1615 hrs 28/11/2024.
Manager NEM Real Time Operations
PDPASA - Update of the Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 29/11/2024
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 121151 has been updated at 1415 hrs to the following:
[1.] From 0800 hrs 29/11/2024 to 0930 hrs 29/11/2024.
The forecast capacity reserve requirement is 941 MW.
The minimum capacity reserve available is 860 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time at which it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 29/11/2024
AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Periods:
[1.] From 0800 hrs 29/11/2024 to 1000 hrs 29/11/2024.
The forecast capacity reserve requirement is 968 MW.
The minimum capacity reserve available is 816 MW.
[2.] From 1330 hrs 29/11/2024 to 1500 hrs 29/11/2024.
The forecast capacity reserve requirement is 1156 MW.
The minimum capacity reserve available is 1102 MW.
[3.] From 1530 hrs 29/11/2024 to 1700 hrs 29/11/2024.
The forecast capacity reserve requirement is 1131 MW.
The minimum capacity reserve available is 1075 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time at which it would need to intervene through an AEMO intervention event.
Manager NEM Real Time Operations
Cancellation - Inter-regional transfer limit variation - to manage Power System Security in NSW region - 28/11/2024
Refer AEMO Electricity Market Notice 121142
Constraint set I-QN_1000 was invoked from 0955 hrs until 1230 hrs 28/11/2024.
This constraint set contains equations with the following interconnector on the LHS;
NSW1-QLD1
Manager NEM Real Time Operations
STPASA - Update to the Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 29/11/2024
The Forecast LOR2 condition in the NSW region advised in AEMO Electricity Market Notice No. 121139 has been updated at 1100 hrs 28/11/2024 to the following:
1. From 0800 hrs to 0930 hrs 29/11/2024.
The forecast capacity reserve requirement is 1023 MW.
The minimum capacity reserve available is 1011 MW.
2. From 1100 hrs to 1500 hrs 29/11/2024.
The forecast capacity reserve requirement is 1281 MW.
The minimum capacity reserve available is 1094 MW.
3. From 1530 hrs to 1700 hrs 29/11/2024.
The forecast capacity reserve requirement is 1189 MW.
The minimum capacity reserve available is 1047 MW.
AEMO is seeking a market response.
AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.
AEMO Operations
Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: NSW1
Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV
Duration: 28/11/2024 11:42 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 500kV line in NSW1 due to Lightning.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Duration: 28/11/2024 11:22 until further notice
Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1
Auto-generated on behalf of Manager NEM Real Time Operations