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Update - Non-credible contingency event - QLD region - 16/04/2025
Update - Non-credible contingency event - QLD region - 16/04/2025
Refer AEMO Electricity Market Notice 126579
At 1231 hrs the Greenbank - Molendinar 8825 275kV line was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 16/04/2025
Refer market notice: 126577
Non-credible contingency event - QLD region - 16/04/2025
At 2110 hrs the Greenbank - Molendinar 8825 275kV line tripped at the Molendinar end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Greenbank - Molendinar 8825 275kV line - QLD region - 16/04/2025
Inter-regional transfer limit variation - Greenbank - Molendinar 8825 275kV line - QLD region - 16/04/2025
At 2110 hrs 16/04/2025 there was an unplanned outage of Greenbank - Molendinar 8825 275kV line.
The following constraint set(s) invoked at 2120 hrs 16/04/2025
Q-GBMO_8824_8825
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Collector -Yass 3L 330kV Line - NSW region - 14/04/2025
Inter-regional transfer limit variation - Collector -Yass 3L 330kV Line - NSW region - 14/04/2025
A planned outage of the Collector -Yass 3L 330kV Line in the NSW region was scheduled from 0700 hrs 12/04/2025 to 1700 hrs 16/04/2025.
The outage has been completed and the Collector -Yass 3L 330kV Line returned to service at 1735 hrs 14/04/2025
Constraint set(s) revoked: N-CTYS_3L_WG_CLOSE
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/04/2025
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 14/04/2025 to 1800 hrs 14/04/2025.
The forecast capacity reserve requirement is 1537 MW.
The minimum capacity reserve available is 1365 MW.
Manager NEM Real Time Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/04/2025
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 126538 is cancelled at 1600 hrs 14/04/2025.
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/04/2025
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 1700 hrs 14/04/2025 to 1830 hrs 14/04/2025.
The forecast capacity reserve requirement is 1595 MW.
The minimum capacity reserve available is 1141 MW.
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 14/04/2025
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 14/04/2025 to 1800 hrs 14/04/2025.
The forecast capacity reserve requirement is 1632 MW.
The minimum capacity reserve available is 1392 MW.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Greenbank SVC- QLD region - 11/04/2025
Inter-regional transfer limit variation - Greenbank SVC - QLD region - 11/04/2025
At 1600 hrs 11/04/2025 there was an unplanned outage of Greenbank SVC.
The following constraint set(s) invoked at 1605 hrs 11/04/2025
Q-GB_VC
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1,N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations