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Cancellation of Actual (LOR2) condition in the NSW region - 27/11/2024
Cancellation of Actual (LOR2) condition in the NSW region - 27/11/2024
The Actual LOR2 Condition in the NSW Region advised in AEMO Electricity Market Notice No.121101 is cancelled at 1645 hrs 27/11/2024.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 2 (LOR2) in the NSW region - 27/11/2024
Actual Lack Of Reserve Level 2 (LOR2) in the NSW region - 27/11/2024
An Actual LOR2 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1530 hrs.
The Actual LOR2 condition is forecast to exist until 1700 hrs.
The capacity reserve required is 685 MW
The minimum reserve available is 412 MW
AEMO is seeking an immediate market response.
Manager NEM Real Time Operations
Non-credible contingency event - NSW region - 26/11/2024
Non-credible contingency event - NSW region - 26/11/2024
At 1637 hrs Uranquinty Unit 12 tripped and at 1639 hrs Uranquinty Units 11 and 13 tripped.
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
Update - Non-credible contingency event - VIC region - 12/11/2024
Update - Non-credible contingency event - VIC region - 12/11/2024
Refer AEMO Electricity Market Notice 120305
At 1135 hrs the Yallourn No 1 220 kV bus 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 - VIC region - 12/11/2024
Non-credible contingency event - VIC region - 12/11/2024
At 1041 hrs the Yallourn No 1 220 kV bus and Yallourn Unit 4 tripped.
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
Update - Non-credible contingency event - NSW region - 31/10/2024
Update - Non-credible contingency event - NSW region - 31/10/2024
Refer AEMO Electricity Market Notice 119689
At 0345 hrs the Wagga B 330 kV bus 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 - NSW region - 31/10/2024
Non-credible contingency event - NSW region - 31/10/2024
At 0028 hrs the Wagga B 330 kV bus tripped which offloaded the Wagga - Walla Walla SF 6Y 330 kV line and Wagga No.3 transformer.
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
Non-credible contingency event - VIC region - 18/10/2024
Non-credible contingency event - VIC region - 18/10/2024
At 1525 hrs the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line tripped and auto-reclosed.
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
Update - Non-credible contingency event - TAS region - 19/09/2024
Update - Non-credible contingency event - TAS region - 19/09/2024
Refer AEMO Electricity Market Notice 118321
At 1446 hrs the Gordon - Chapel St No 1 and No 2 220 kV lines were returned to service.
This non-credible contingency event was caused by lightning. 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.
Manager NEM Real Time Operations