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Non-credible contingency event - QLD region - 26/12/2023
Non-credible contingency event - QLD region - 26/12/2023
At 2345 hrs the Strathmore Clare South 7208 and the Strathmore Clare South Tee King Creek 7128 132kV lines 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
Non-credible contingency event - QLD region - 21/12/2023
Non-credible contingency event - QLD region - 21/12/2023
At 1424 hrs the H14 Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No.3 275/110 kV transformers.
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
Cancellation of Actual (LOR1) condition in the NSW region - 14/12/2023
Cancellation of Actual (LOR1) condition in the NSW region - 14/12/2023
The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.112357 is cancelled at 1940 hrs 14/12/2023.
Manager NEM Real Time Operations
Cancellation of Actual (LOR2) condition in the NSW region - 14/12/2023
Cancellation of Actual (LOR2) condition in the NSW region - 14/12/2023
The Actual LOR2 Condition in the NSW Region advised in AEMO Electricity Market Notice No.112362 is cancelled at 1810 hrs 14/12/2023.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 2 (LOR2) in the NSW region - 14/12/2023
Actual Lack Of Reserve Level 2 (LOR2) in the NSW region - 14/12/2023
An Actual LOR2 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1730 hrs.
The Actual LOR2 condition is not forecast in Pre Dispatch
The capacity reserve required is 690 MW
The minimum reserve available is 678 MW
AEMO is seeking an immediate market response.
An insufficient market response may require AEMO to implement a AEMO intervention event.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 14/12/2023
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 14/12/2023
An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1630 hrs.
The Actual LOR1 condition is forecast to exist until 1930 hrs
The capacity reserve requirement is 1377 MW
The minimum capacity reserve available is 874 MW
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 13/12/2023
Non-credible contingency event - TAS region - 13/12/2023
At 1324 hrs the Hadspen - Palmerston No.3 & No.4 110 kV lines 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 - SA region - 11/12/2023
Update - Non-credible contingency event - SA region - 11/12/2023
Refer AEMO Electricity Market Notice 112181
At 1554 hrs the remaining Mintaro - Waterloo 132 kV Line was returned to service.
The following constraint set(s) revoked:
S-X-MNWT+CB
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 - SA region - 11/12/2023
Non-credible contingency event - SA region - 11/12/2023
At 0444 hrs the Mintaro - Waterloo 132 kV Line tripped and the Clare North - Mintaro 132 kV Line tripped at the Mintaro 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