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90937POWER SYSTEM EVENTS22/09/2021 10:24:43 AM
Non-credible contingency event - VIC region - 22/09/2021
AEMO ELECTRICITY MARKET NOTICE
Non-credible contingency event - VIC region - 22/09/2021
At 0916 hrs the Springvale No. 1 220 kV busbar 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 - 22/09/2021
At 0916 hrs the Springvale No. 1 220 kV busbar 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
90433POWER SYSTEM EVENTS13/09/2021 01:33:49 PM
Update - Non-credible contingency event - Qld region - 12/09/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Qld region - 12/09/2021
Refer AEMO Electricity Market Notice 90396
At 2215 hrs the Ross - Townsville South 7249 132 kV line tripped and auto-reclosed and the Kennedy Energy Park Wind Farm tripped.
The cause of this non credible contingency has been identified. AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - Qld region - 12/09/2021
Refer AEMO Electricity Market Notice 90396
At 2215 hrs the Ross - Townsville South 7249 132 kV line tripped and auto-reclosed and the Kennedy Energy Park Wind Farm tripped.
The cause of this non credible contingency has been identified. AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
90396POWER SYSTEM EVENTS12/09/2021 11:16:30 PM
Non-credible contingency event - Qld region - 12/09/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Qld region - 12/09/2021
At 2215 hrs the Ross - Townsville South 7249 132 kV line tripped and auto-reclosed and the Kennedy Energy Park Wind Farm 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 - 12/09/2021
At 2215 hrs the Ross - Townsville South 7249 132 kV line tripped and auto-reclosed and the Kennedy Energy Park Wind Farm 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
90395POWER SYSTEM EVENTS12/09/2021 07:39:49 PM
Non-credible contingency event - SA region - 12/09/2021
Non-credible contingency event - SA region - 12/09/2021
At 1822 hrs at Canowie substation circuit breakers CB 6501 and CB 6502 tripped which resulted in the following:
Opening of the Canowie - Robertstown 275 kV Line at the Canowie end only
Opening of the Canowie - Mt Lock 275 kV Line at the Canowie end only
Disconnection of Hallett substation and Hallet WF
At 1826 hrs CB 6501 at Canowie was manually closed which returned the Canowie - Robertstown 275 kV Line and the Canowie - Mt Lock 275 kV Line into service.
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 1822 hrs at Canowie substation circuit breakers CB 6501 and CB 6502 tripped which resulted in the following:
Opening of the Canowie - Robertstown 275 kV Line at the Canowie end only
Opening of the Canowie - Mt Lock 275 kV Line at the Canowie end only
Disconnection of Hallett substation and Hallet WF
At 1826 hrs CB 6501 at Canowie was manually closed which returned the Canowie - Robertstown 275 kV Line and the Canowie - Mt Lock 275 kV Line into service.
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
90307POWER SYSTEM EVENTS09/09/2021 07:16:04 PM
Update - Non-credible contingency event - Tas region - 09/09/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Tas region - 09/09/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 90306
At 1846 hrs the Gordon Power Station the 'B' 220 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
Update - Non-credible contingency event - Tas region - 09/09/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 90306
At 1846 hrs the Gordon Power Station the 'B' 220 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
90306POWER SYSTEM EVENTS09/09/2021 05:54:56 PM
Non-credible contingency event - Tas region - 09/09/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Tas region - 09/09/2021
At 1738 hrs at Gordon Power Station the 'B' 220 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 - Tas region - 09/09/2021
At 1738 hrs at Gordon Power Station the 'B' 220 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
90122POWER SYSTEM EVENTS01/09/2021 11:37:19 AM
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 31/08/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 90050
At 0305 hrs 31/08/2021 the T209 Bluff No 1 132 kV SVC was returned to service.
At 1100 hrs 01/09/2021 the T32 Blackwater No 1 132 kV 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 - QLD region - 31/08/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - QLD region - 31/08/2021
Refer AEMO ELECTRICITY MARKET NOTICE MN 90050
At 0305 hrs 31/08/2021 the T209 Bluff No 1 132 kV SVC was returned to service.
At 1100 hrs 01/09/2021 the T32 Blackwater No 1 132 kV 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
90094POWER SYSTEM EVENTS31/08/2021 06:00:03 PM
Update - Non-credible contingency event - NSW Region - 31/08/2021
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW Region - 31/08/2021
Refer AEMO Electricity Market Notice 90077
At 1140 hrs the Eraring main 500 kV bus tripped.
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.
The Eraring main 500 kV bus was returned to service at 1745 hrs.
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW Region - 31/08/2021
Refer AEMO Electricity Market Notice 90077
At 1140 hrs the Eraring main 500 kV bus tripped.
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.
The Eraring main 500 kV bus was returned to service at 1745 hrs.
Manager NEM Real Time Operations
90077POWER SYSTEM EVENTS31/08/2021 01:17:23 PM
Non-credible contingency event - NSW Region - 31/08/2021
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW Region - 31/08/2021
At 1140 hrs the Eraring main 500 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 - NSW Region - 31/08/2021
At 1140 hrs the Eraring main 500 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