Market Notices

90050POWER SYSTEM EVENTS31/08/2021 02:33:36 AM

Non-credible contingency event - Qld Region - 31/08/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - Qld Region - 31/08/2021

At 0207 hrs the T32 Blackwater No 1 132 kV SVC and T209 Bluff No 1 132 kV 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
89371POWER SYSTEM EVENTS10/08/2021 08:43:31 PM

Update - Non-credible contingency event - NSW region - 10/08/2021

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 10/08/2021

Refer AEMO Electricity Market Notice 89358

At 0306 hrs the Bayswater - Mt Piper No 5A3 500kV line tripped and auto reclosed and the Bayswater No 4 generator 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.


Manager NEM Real Time Operations
89358POWER SYSTEM EVENTS10/08/2021 03:22:43 AM

Non-credible contingency event - NSW region - 10/08/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 10/08/2021

At 0306 hrs the Bayswater - Mt Piper No 5A3 500kV line tripped and auto reclosed and the Bayswater No 4 generator 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
88303POWER SYSTEM EVENTS17/07/2021 12:00:27 AM

Update - Non-credible contingency event - SA region - 16/07/2021

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - SA region - 16/07/2021

The cause of the non-credible event at 2149 hrs has been identified as lightning.

The Cherry Gardens - Tailem Bend 275 kV transmission line successfully single pole auto reclosed

The Cherry Gardens - Mount Barker South 275 kV transmission line successfully single pole auto reclosed.

AEMO will not reclassify this event as a credible contingency event.

Manager NEM Real Time Operations
88302POWER SYSTEM EVENTS16/07/2021 11:21:36 PM

Non-credible contingency event - SA region - 16/07/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - SA region - 16/07/2021

At 2149 hrs the following lines tripped in the SA region

Cherry Gardens - Tailem Bend 275 kV line

Cherry Gardens - Mount Barker South 275 kV line

Cherry Gardens - Mt Barker 132 kV line

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 has been identified.


Manager NEM Real Time Operations
88125POWER SYSTEM EVENTS13/07/2021 05:06:09 PM

Non-credible contingency event - NSW region - 13/07/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 13/07/2021

At 1642 hrs the 88 Muswellbrook to Tamworth 330 kV line opened at the Tamworth 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.

At 1644 hrs the 88 Muswellbrook to Tamworth 330 kV line was returned to service.

Manager NEM Real Time Operations
87893POWER SYSTEM EVENTS05/07/2021 09:51:05 AM

Non-credible contingency event - NSW region - 05/07/2021

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 05/07/2021

At 0847 hrs the Armidale - Sapphire WF 8E 330 kV line CB opened at the Armidale 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

At 0848 hrs the Armidale - Sapphire WF 8E 330 kV line was returned to service.


Manager NEM Real Time Operations
87734POWER SYSTEM EVENTS28/06/2021 05:09:42 PM

Update - Non-credible contingency event - Qld region - 28/06/2021

AEMO ELECTRICITY MARKET NOTICE.

Refer AEMO ELECTRICITY MARKET NOTICE MN 87716

At 1657 hrs 28/06/21 the H76 Wandoan South No1 132 kV bus was re-energised.

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
87716POWER SYSTEM EVENTS28/06/2021 02:06:28 PM

Non-credible contingency event - Qld region - 28/06/2021

AEMO ELECTRICITY MARKET NOTICE.

At 1329 hrs 28/06/21 the H76 Wandoan South No1 132 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
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