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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: 18/05/2025 17:48
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 127128
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: 18/05/2025 16:46 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
Inter-regional transfer limit variation - Black Range No.1 275 kV Series Capacitor - SA region - 18/05/2025
Inter-regional transfer limit variation - Black Range No.1 275 kV Series Capacitor - SA region - 18/05/2025
At 0916 hrs 18/05/2025 there was an unplanned outage of Black Range No.1 275 kV Series Capacitor.
The following constraint set(s) invoked at 0955 hrs 18/05/2025
S-BC_CP
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the QLD Region on 15/05/2025
The Forecast LOR1 condition in the QLD region advised in AEMO Electricity Market Notice No. 127067 is cancelled at 1410 hrs 15/05/2025.
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the QLD Region on 16/05/2025
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the QLD region for the following Period:
[1.] From 1730 hrs 16/05/2025 to 1800 hrs 16/05/2025.
The forecast capacity reserve requirement is 1216 MW.
The minimum capacity reserve available is 1201 MW.
Manager NEM Real Time Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 13/05/2025
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 127043 is cancelled at 1740 hrs 13/05/2025.
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 13/05/2025
AEMO declares a Forecast LOR1 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following Period:
[1.] From 1730 hrs 13/05/2025 to 1800 hrs 13/05/2025.
The forecast capacity reserve requirement is 1385 MW.
The minimum capacity reserve available is 1070 MW.
Manager NEM Real Time Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/05/2025
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 127025 is cancelled at 1645 hrs 13/05/2025.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - North West Bend to Monash No. 2 132 kV Line - SA region - 13/05/2025
Inter-regional transfer limit variation - North West Bend to Monash No. 2 132 kV Line - SA region - 13/05/2025
At 1555 hrs 13/05/2025 there was an unplanned outage of North West Bend to Monash No. 2 132 kV Line.
The following constraint set(s) invoked at 1555 hrs 13/05/2025
S-NWCB6022+6023
S-MH_CB6153
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-S-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations