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87893POWER SYSTEM EVENTS05/07/2021 09:51:05 AM
Non-credible contingency event - NSW region - 05/07/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 05/07/2021
At 0847 hrs the Armidale - Sapphire WF 8E 330 kV line CB opened at the Armidale 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
At 0848 hrs the Armidale - Sapphire WF 8E 330 kV line was returned to service.
Manager NEM Real Time Operations
Non-credible contingency event - NSW region - 05/07/2021
At 0847 hrs the Armidale - Sapphire WF 8E 330 kV line CB opened at the Armidale 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
At 0848 hrs the Armidale - Sapphire WF 8E 330 kV line was returned to service.
Manager NEM Real Time Operations
87734POWER SYSTEM EVENTS28/06/2021 05:09:42 PM
Update - Non-credible contingency event - Qld region - 28/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE MN 87716
At 1657 hrs 28/06/21 the H76 Wandoan South No1 132 kV bus was re-energised.
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 87716
At 1657 hrs 28/06/21 the H76 Wandoan South No1 132 kV bus was re-energised.
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
87716POWER SYSTEM EVENTS28/06/2021 02:06:28 PM
Non-credible contingency event - Qld region - 28/06/2021
AEMO ELECTRICITY MARKET NOTICE.
At 1329 hrs 28/06/21 the H76 Wandoan South No1 132 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
At 1329 hrs 28/06/21 the H76 Wandoan South No1 132 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
87216POWER SYSTEM EVENTS15/06/2021 02:16:46 PM
Update - Non-credible contingency event - QLD region - 15/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 15/06/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 87197
At 1400 hrs 15/06/2021 the Darling Downs Power Station GT1, GT2 and GT3 were made available for 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 - 15/06/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 87197
At 1400 hrs 15/06/2021 the Darling Downs Power Station GT1, GT2 and GT3 were made available for 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
87197POWER SYSTEM EVENTS15/06/2021 10:08:13 AM
Non-credible contingency event - QLD region - 15/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 15/06/2021
At 0947 hrs 15/06/2021, Darling Downs Power Station GT1, GT2 and GT3 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 - 15/06/2021
At 0947 hrs 15/06/2021, Darling Downs Power Station GT1, GT2 and GT3 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
87194POWER SYSTEM EVENTS15/06/2021 09:44:59 AM
Non-credible contingency event - QLD region - 15/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 15/06/2021
At 0918 hrs the H67 Calliope River No 1 132kV 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 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 - 15/06/2021
At 0918 hrs the H67 Calliope River No 1 132kV 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 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
86438POWER SYSTEM EVENTS02/06/2021 03:56:25 PM
Update - Non-credible contingency event - VIC region - 02/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - VIC region - 02/06/2021
Refer AEMO Electricity Market Notice 86436
At 1543 hrs, at Heywood the South East 1 line M1 transformer 275kV circuit breaker 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
Update - Non-credible contingency event - VIC region - 02/06/2021
Refer AEMO Electricity Market Notice 86436
At 1543 hrs, at Heywood the South East 1 line M1 transformer 275kV circuit breaker 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
86436POWER SYSTEM EVENTS02/06/2021 02:10:21 PM
Non-credible contingency event - VIC region - 02/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - VIC region - 02/06/2021
At 1342 hrs, at Heywood the South East 1 line M1 transformer 275kV circuit breaker opened. This offloads the Heywood M1 500/275kV 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 - 02/06/2021
At 1342 hrs, at Heywood the South East 1 line M1 transformer 275kV circuit breaker opened. This offloads the Heywood M1 500/275kV 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
86402POWER SYSTEM EVENTS01/06/2021 06:52:59 PM
Update - Non-credible contingency event - QLD region - 01/06/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 01/06/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 86383
At 1845 hrs the Darling Downs Power Station 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
Update - Non-credible contingency event - QLD region - 01/06/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 86383
At 1845 hrs the Darling Downs Power Station 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