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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
Inter-regional transfer limit variation - to manage Power System Security in NSW region - 28/11/2024
In order to maintain the power system in a secure operating state in the NSW region, AEMO has invoked the following constraint set I-QN_1000 from 0955 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
NSW1-QLD1
Manager NEM Real Time Operations