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108846POWER SYSTEM EVENTS09/07/2023 08:34:15 AM
Non-credible contingency event - Vic region - 09/07/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Vic region - 09/07/2023
At 0653 hrs the following elements tripped;
- Mortlake PS - Blue Gum 500 kV Line,
- Blue Gum A1 500/220 kV Transformer
- Dundonnell WF tripped.
- MOPS G11 Trans No2 Bus 500 kV CB 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 - Vic region - 09/07/2023
At 0653 hrs the following elements tripped;
- Mortlake PS - Blue Gum 500 kV Line,
- Blue Gum A1 500/220 kV Transformer
- Dundonnell WF tripped.
- MOPS G11 Trans No2 Bus 500 kV CB 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
108788POWER SYSTEM EVENTS29/06/2023 08:51:49 PM
Non-credible contingency event - Vic region - 29/06/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Vic region - 29/06/2023
At 1454 hrs the Altona - Keilor 220 kV line and the Salt Creek windfarm 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.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: Vic
Duration: 2045 hrs 29/06/2023 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Non-credible contingency event - Vic region - 29/06/2023
At 1454 hrs the Altona - Keilor 220 kV line and the Salt Creek windfarm 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.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: Vic
Duration: 2045 hrs 29/06/2023 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
108414POWER SYSTEM EVENTS08/06/2023 02:56:53 PM
Non-credible contingency event - NSW region - 08/06/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 08/06/2023
At 1433 hrs the Liddell - Tomago 330 kV 82 line and Liddell 330 kV CB 5412 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 - 08/06/2023
At 1433 hrs the Liddell - Tomago 330 kV 82 line and Liddell 330 kV CB 5412 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
108259POWER SYSTEM EVENTS29/05/2023 10:17:37 AM
Non-credible contingency event - Vic region - 29/05/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Vic region - 29/05/2023
At 0941hrs the Moorabool No1 220kV 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 - Vic region - 29/05/2023
At 0941hrs the Moorabool No1 220kV 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
108025POWER SYSTEM EVENTS23/05/2023 10:31:42 PM
Non-credible contingency event - Qld region - 23/05/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld region - 23/05/2023
At 2106 hrs the Kamerunga - Woree 7141 132 kV Line and Barron Gorge 1 and 2 generating units tripped. At 2107 hrs the Kamerunga - Barron Gorge 7143 132 kV Line 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 - 23/05/2023
At 2106 hrs the Kamerunga - Woree 7141 132 kV Line and Barron Gorge 1 and 2 generating units tripped. At 2107 hrs the Kamerunga - Barron Gorge 7143 132 kV Line 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
107944POWER SYSTEM EVENTS16/05/2023 10:11:16 PM
Update - Non-credible contingency event - Qld region - 16/05/2023
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE MN107943
At 2142 hrs the H3 Belmont No 2 275 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
Refer AEMO ELECTRICITY MARKET NOTICE MN107943
At 2142 hrs the H3 Belmont No 2 275 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
107943POWER SYSTEM EVENTS16/05/2023 07:07:46 PM
Non-credible contingency event - Qld region - 16/05/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld region - 16/05/2023
At 1852 hrs the H3 Belmont 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 - 16/05/2023
At 1852 hrs the H3 Belmont 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
107527POWER SYSTEM EVENTS18/04/2023 05:51:48 PM
Update - Non-credible contingency event - NSW region - 07/04/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 07/04/2023
Refer AEMO MN 107349
At 1648 hrs 18/04/2023, the Tamworth SVC 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 - NSW region - 07/04/2023
Refer AEMO MN 107349
At 1648 hrs 18/04/2023, the Tamworth SVC 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
107349POWER SYSTEM EVENTS07/04/2023 11:10:58 PM
Non-credible contingency event - NSW region - 07/04/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 07/04/2023
At 2257 hrs the Liddell - Tomago 82 330 kV line and the Tamworth SVC 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 - 07/04/2023
At 2257 hrs the Liddell - Tomago 82 330 kV line and the Tamworth SVC 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