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Reclassification of a Non-Credible Contingency Event: Eildon PS - Mt Beauty No.1 220 kV line and Eildon PS - Mt Beauty No.2 220 kV line in VIC1 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: VIC1
Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV
Duration: 10/05/2024 16:51 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
Reclassification of non-credible contingency event due to existence of widespread abnormal condition/s - NEM regions.
AEMO has identified that a non-credible contingency event impacting the power system is more likely to occur and is considered reasonably possible because of the existence of widespread abnormal conditions namely Severe Space Weather Watch in the NEM regions.
AEMO has therefore reclassified the occurrence of a non-credible contingency event involving multiple plant due to these abnormal conditions as credible.
Need for further measures is being monitored and further measures may be implemented in line with the Power System Security Guidelines (SO_OP_3715).
Manager NEM Real Time Operations
Cancellation - Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned outage : Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer - Qld region.
Cancellation - Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to planned outage.
AEMO considers the occurrence of a non-credible contingency event due to planned outage advised in AEMO Electricity Market Notice 116557 is no longer reasonably possible and accordingly its classification has reverted to non-credible.
Region: Qld
Elements: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer
Cancellation time: 1800 hrs 10/05/2024
Constraint set(s) invoked:
Nil
Manager NEM Real Time Operations
PDPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/05/2024
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 116559 has been updated at 1615 hrs to the following:
[1.] From 1630 hrs 09/05/2024 to 1900 hrs 09/05/2024.
The forecast capacity reserve requirement is 1450 MW.
The minimum capacity reserve available is 979 MW.
Manager NEM Real Time Operations
PDPASA - Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/05/2024
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 09/05/2024 to 1830 hrs 09/05/2024.
The forecast capacity reserve requirement is 1430 MW.
The minimum capacity reserve available is 1236 MW.
Manager NEM Real Time Operations
PDPASA - Cancellation of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/05/2024
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 116556 is cancelled at 0840 hrs 09/05/2024.
Manager NEM Real Time Operations
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer - Qld region.
Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event. AEMO considers the simultaneous trip of the following elements to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.
Region: Qld
Elements: Ross 275 kV SVC and Ross 275/132 kV No. 4 transformer
Duration: 1400 hrs 09/05/2024 until further notice
Constraint set(s) invoked:
Nil
Manager NEM Real Time Operations
PDPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/05/2024
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 116555 has been updated at 0745 hrs to the following:
[1.] From 1730 hrs 09/05/2024 to 1800 hrs 09/05/2024.
The forecast capacity reserve requirement is 1430 MW.
The minimum capacity reserve available is 1416 MW.
Manager NEM Real Time Operations
PDPASA - Update of the Forecast Lack Of Reserve Level 1 (LOR1) in the NSW Region on 09/05/2024
The Forecast LOR1 condition in the NSW region advised in AEMO Electricity Market Notice No. 116552 has been updated at 0620 hrs to the following:
[1.] From 1630 hrs 09/05/2024 to 1800 hrs 09/05/2024.
The forecast capacity reserve requirement is 1430 MW.
The minimum capacity reserve available is 1320 MW.
Manager NEM Real Time Operations