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112165POWER SYSTEM EVENTS11/12/2023 06:36:10 AM
Non-credible contingency event - SA region - 11/12/2023
AEMO ELECTRICITY MARKET NOTICE.
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
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
111848POWER SYSTEM EVENTS29/11/2023 03:22:48 PM
Non-credible contingency event - QLD region - 29/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 29/11/2023
At 1421 hrs the R2 Braemar No.4 275 kV Busbar and R2 Braemar - S5 Western Downs No.8820 275 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 - 29/11/2023
At 1421 hrs the R2 Braemar No.4 275 kV Busbar and R2 Braemar - S5 Western Downs No.8820 275 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
111796POWER SYSTEM EVENTS28/11/2023 01:52:36 PM
Update - Non-credible contingency event - SA region - 28/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 28/11/2023
Refer AEMO Electricity Market Notice 111779
Based on revised information, at 0534 hrs the Tungkillo- Robertstown No.1 and No.2 275kV lines tripped simultaneously. At 0536 hrs the Robertstown No.1 and No.2 synchronous condensers tripped simultaneously as a result.
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 - 28/11/2023
Refer AEMO Electricity Market Notice 111779
Based on revised information, at 0534 hrs the Tungkillo- Robertstown No.1 and No.2 275kV lines tripped simultaneously. At 0536 hrs the Robertstown No.1 and No.2 synchronous condensers tripped simultaneously as a result.
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
111779POWER SYSTEM EVENTS28/11/2023 05:53:09 AM
Non-credible contingency event - SA region - 28/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 28/11/2023
At 0536 hrs the Robertstown No1 syncon and the Robertstown No2 syncon tripped simultaneously.
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 - 28/11/2023
At 0536 hrs the Robertstown No1 syncon and the Robertstown No2 syncon tripped simultaneously.
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
111253POWER SYSTEM EVENTS14/11/2023 11:37:28 AM
Update - Non-credible contingency event - SA region - 14/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 14/11/2023
Refer AEMO Electricity Market Notice 111252
At 1124 hrs the Para 275kV West Left 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
Update - Non-credible contingency event - SA region - 14/11/2023
Refer AEMO Electricity Market Notice 111252
At 1124 hrs the Para 275kV West Left 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
111252POWER SYSTEM EVENTS14/11/2023 11:09:55 AM
Non-credible contingency event - SA region - 14/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 14/11/2023
At 1045hrs the Para 275kV West Left 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 - SA region - 14/11/2023
At 1045hrs the Para 275kV West Left 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
110690POWER SYSTEM EVENTS03/11/2023 09:19:19 AM
Update - Non-credible contingency event - VIC region - 03/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - VIC region - 03/11/2023
Refer AEMO Electricity Market Notice 110687
At 0845 hrs the Mount Beauty No.2 220kV 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
Update - Non-credible contingency event - VIC region - 03/11/2023
Refer AEMO Electricity Market Notice 110687
At 0845 hrs the Mount Beauty No.2 220kV 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
110687POWER SYSTEM EVENTS03/11/2023 04:37:33 AM
Non-credible contingency event - VIC region - 03/11/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - VIC region - 03/11/2023
At 0412 hrs the Mount Beauty No.2 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 is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - VIC region - 03/11/2023
At 0412 hrs the Mount Beauty No.2 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 is not known at this stage.
Manager NEM Real Time Operations
110349POWER SYSTEM EVENTS21/10/2023 08:40:56 PM
Non-credible contingency event - TAS region - 21/10/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 21/10/2023
At 2029 hrs the Wadamana Tungatina No.1 and No.2 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
Non-credible contingency event - TAS region - 21/10/2023
At 2029 hrs the Wadamana Tungatina No.1 and No.2 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