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83524POWER SYSTEM EVENTS22/03/2021 12:05:29 PM
Non-credible contingency event - Qld region - 22/03/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld region - 22/03/2021
At 1147 hrs the S5_Western Downs No 2 275 kV Bus 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 - 22/03/2021
At 1147 hrs the S5_Western Downs No 2 275 kV Bus 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
83276POWER SYSTEM EVENTS12/03/2021 11:58:26 PM
Update - Non-credible contingency event - SA region - 12/03/2021
AEMO ELECTRICITY MARKET NOTICE.
The cause of this non credible contingency event has been identified.
AEMO accordingly no longer considers the following equipment to be a credible contingency.
Region: SA
Elements: Torrens Island Power Station Units 1, 2, 3 and 4
Cancellation time: 12/03/2021 23:40 hrs
Constraint set(s) revoked: S-TIPSB_N-2
Refer AEMO Electricity Market Notice 83253
Manager NEM Real Time Operations
The cause of this non credible contingency event has been identified.
AEMO accordingly no longer considers the following equipment to be a credible contingency.
Region: SA
Elements: Torrens Island Power Station Units 1, 2, 3 and 4
Cancellation time: 12/03/2021 23:40 hrs
Constraint set(s) revoked: S-TIPSB_N-2
Refer AEMO Electricity Market Notice 83253
Manager NEM Real Time Operations
83253POWER SYSTEM EVENTS12/03/2021 05:56:07 PM
Update - Non-credible contingency event - SA region - 12/03/2021
Update - Non-credible contingency event - SA region - 12/03/2021
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE MN83251
The cause of this non credible contingency event has been identified.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: SA
Elements: Torrens Island Power Station Units 1, 2, 3 and 4
Duration: 12/03/2021 17:50 until further notice
Constraint set(s) invoked: S-TIPSB_N-2
Manager NEM Real Time Operations
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE MN83251
The cause of this non credible contingency event has been identified.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: SA
Elements: Torrens Island Power Station Units 1, 2, 3 and 4
Duration: 12/03/2021 17:50 until further notice
Constraint set(s) invoked: S-TIPSB_N-2
Manager NEM Real Time Operations
83251POWER SYSTEM EVENTS12/03/2021 05:39:29 PM
Non-credible contingency event - SA region - 12/03/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 12/03/2021
At 1708 hrs the Torrens Island Power Station West A and West B 275 kV buses tripped. Barkers Inlet generation (88MW) also 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 - SA region - 12/03/2021
At 1708 hrs the Torrens Island Power Station West A and West B 275 kV buses tripped. Barkers Inlet generation (88MW) also 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
83216POWER SYSTEM EVENTS10/03/2021 10:54:28 PM
Update - Non-credible contingency event - NSW region - 10/03/2021
Update - Non-credible contingency event - NSW region - 10/03/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 83201
At 2246 hrs the Vales Point No. 1 330/132 transformer and the Vales Point to Lake Munmorah 95T 132kV 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
Refer AEMO ELECTRICITY MARKET NOTICE MN 83201
At 2246 hrs the Vales Point No. 1 330/132 transformer and the Vales Point to Lake Munmorah 95T 132kV 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
83201POWER SYSTEM EVENTS10/03/2021 09:22:30 AM
Non-credible contingency event - NSW region - 10/03/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 10/03/2021
At 0851 hrs the Vales Point No. 1 330/132 transformer, Vales Point to Lake Munmorah 95T 132kV line and the Vales Point No. 5 Unit 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 - NSW region - 10/03/2021
At 0851 hrs the Vales Point No. 1 330/132 transformer, Vales Point to Lake Munmorah 95T 132kV line and the Vales Point No. 5 Unit 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
83111POWER SYSTEM EVENTS04/03/2021 12:18:25 PM
Non-credible contingency event - Qld region - 04/03/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld region - 04/03/2021
At 11:49 hrs the H79 Yuleba North 132 kV bus 2 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 - 04/03/2021
At 11:49 hrs the H79 Yuleba North 132 kV bus 2 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
83110POWER SYSTEM EVENTS04/03/2021 04:36:40 AM
Update - Non-credible contingency event - Qld region - 04/03/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Qld region - 04/03/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN83109
At 0429 hrs the Dysart No 1 Transformer and the Dysart SVC were 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
Update - Non-credible contingency event - Qld region - 04/03/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN83109
At 0429 hrs the Dysart No 1 Transformer and the Dysart SVC were 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
83109POWER SYSTEM EVENTS04/03/2021 01:44:25 AM
Non-credible contingency event - Qld region - 04/03/2021
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - Qld region - 04/03/2021
At 0124 hrs the Dysart No 1 Transformer and the Dysart SVC tripped.
AEMO did not instruct load shedding.
AEMO has been advised of the disconnection of approximately 40MW 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 - 04/03/2021
At 0124 hrs the Dysart No 1 Transformer and the Dysart SVC tripped.
AEMO did not instruct load shedding.
AEMO has been advised of the disconnection of approximately 40MW of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations