Market Notices

74494POWER SYSTEM EVENTS27/02/2020 01:17:07 AM

Non-credible contingency event - Qld region - 26/02/2020

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - Qld region - 26/02/2020


At 2350 hrs the Calvale - Stanwell 8873 and 8874 275 kV Lines tripped and 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




74388POWER SYSTEM EVENTS21/02/2020 04:13:49 PM

Non-credible contingency event - NSW Region - 21/02/2020


AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW Region - 21/02/2020

At 1418 hrs the Erarring Unit 3 and at 1419 hrs the Erarring 3A and 3B Generator Transformer 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
74208POWER SYSTEM EVENTS17/02/2020 04:24:15 PM

Cancellation :- Vic - SA Separation Event - 31/01/20

AEMO ELECTRICITY MARKET NOTICE

Cancellation : - Separation of the Victoria and South Australia Regions - 31/01/2020

Refer AEMO Electricity Markewt Notice No 73172

At 1605 hrs 17/02/2020 the Victoria and South Australia regions were synchronised at Heywood Terminal Station.


Manager NEM Real Time Operations
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
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



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
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
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
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
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