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74182POWER SYSTEM EVENTS17/02/2020 07:01:19 AM
Update - Non-credible contingency event - NSW region - 17/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 17/02/2020
Refer AEMO ELECTRICITY MARKET NOTICE 74180
At 0519 hrs the Bayswater - Mt Piper 5A3 and Wollar - Mt Piper 5A5 500 kV Lines tripped and auto reclosed.
The cause of this non credible contingency event has been identified as due to lightning.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO will therefore reclassify this event as a credible contingency event when lightning is in the vicinity.
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW region - 17/02/2020
Refer AEMO ELECTRICITY MARKET NOTICE 74180
At 0519 hrs the Bayswater - Mt Piper 5A3 and Wollar - Mt Piper 5A5 500 kV Lines tripped and auto reclosed.
The cause of this non credible contingency event has been identified as due to lightning.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO will therefore reclassify this event as a credible contingency event when lightning is in the vicinity.
Manager NEM Real Time Operations
74180POWER SYSTEM EVENTS17/02/2020 05:43:46 AM
Non-credible contingency event - NSW region - 17/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 17/02/2020
At 0519 hrs the Bayswater - Mt Piper 5A3 and Wollar - Mt Piper 5A5 500 kV Lines 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 - NSW region - 17/02/2020
At 0519 hrs the Bayswater - Mt Piper 5A3 and Wollar - Mt Piper 5A5 500 kV Lines 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
74122POWER SYSTEM EVENTS14/02/2020 09:40:53 PM
Update - Non-credible contingency event - Qld region - 12/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - Qld region - 12/02/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 74085
At 1427 hrs 14/02/2020 the Braemar - Kumbarilla Park (8883) 275 kV 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
Update - Non-credible contingency event - Qld region - 12/02/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 74085
At 1427 hrs 14/02/2020 the Braemar - Kumbarilla Park (8883) 275 kV 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
74085POWER SYSTEM EVENTS12/02/2020 10:07:22 PM
Non-credible contingency event - QLD region - 12/02/2020
AEMO ELECTRICITY MARKET NOTICE.
At 2124 hrs the Braemar - Kumbarilla Park 275 kV 8883 line opened at Kumbarilla Park end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
Manager NEM Real Time Operations
At 2124 hrs the Braemar - Kumbarilla Park 275 kV 8883 line opened at Kumbarilla Park end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
Manager NEM Real Time Operations
74015POWER SYSTEM EVENTS10/02/2020 04:47:11 PM
Update - Non-credible contingency event - NSW region - 10/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 10/02/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 74008
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 - 10/02/2020
Refer AEMO ELECTRICITY MARKET NOTICE MN 74008
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
74008POWER SYSTEM EVENTS10/02/2020 03:05:43 PM
Non-credible contingency event -NSW region - 10/02/2020
AEMO ELECTRICITY MARKET NOTICE.
At 1243 hrs the Sydney South - Beaconsfield 330 kV Cable (41) tripped at Beaconsfield only.
At 1348 hrs the Sydney South - Beaconsfield 330 kV Cable (41) tripped at Sydney South 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
At 1243 hrs the Sydney South - Beaconsfield 330 kV Cable (41) tripped at Beaconsfield only.
At 1348 hrs the Sydney South - Beaconsfield 330 kV Cable (41) tripped at Sydney South 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
73893POWER SYSTEM EVENTS07/02/2020 04:57:06 AM
Non-credible contingency event - NSW region - 07/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 07/02/2020
At 0411 hrs the Liddell No1 Generator tripped and the Liddell - Muswellbrook 83 330 kV Line tripped and reclosed at Muswellbrook end only.
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 - NSW region - 07/02/2020
At 0411 hrs the Liddell No1 Generator tripped and the Liddell - Muswellbrook 83 330 kV Line tripped and reclosed at Muswellbrook end only.
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
73560POWER SYSTEM EVENTS02/02/2020 07:45:02 PM
Update - Non-credible contingency event - Qld region - 01/02/2020
AEMO ELECTRICITY MARKET NOTICE.
Refer AEMO ELECTRICITY MARKET NOTICE MN 73269
At 1834 hrs the Braemar - Kumbarilla Park No. 8883 275 kV 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 73269
At 1834 hrs the Braemar - Kumbarilla Park No. 8883 275 kV 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
73347POWER SYSTEM EVENTS01/02/2020 03:18:13 PM
Update - Non-credible contingency event - NSW region - 01/02/2020
AEMO ELECTRICITY MARKET NOTICE.
refer MN 73318
At 1504 hrs the Munmorah Main 330kV 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 MN 73318
At 1504 hrs the Munmorah Main 330kV 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