Market Notices

AEMO ELECTRICITY MARKET NOTICE

Load Shedding Direction in the Vic Region

AEMO has directed load shedding commencing at 1420 hrs 13/02/2024
in the Victoria region to restore power system security.

The direction was issued under section 116 of the NEL, and was a clause 4.8.9 instruction under the NER.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Significant power system event - 13 Feb 2024

At 1308 hrs 13/02/2024 a significant power system event occurred.

Description of event - Multiple tripping of generation and transmission lines in the Vic region

Transmission element(s) tripped - Moorabool Sydenham No1 and No2 500 kV lines tripped

Region/s - Vic

Load interrupted - in excess of 1000 MW

Generation volume tripped - 2300 MW

Updates will be provided as additional information becomes available.

This Market Notice is issued in accordance with NER clause 4.8.3.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Cancellation - Non-credible contingency event - QLD region - 27/01/2024

Refer AEMO Electricity Market Notice 113825

At 0138 hrs the Gin Gin (H6) No.2 275 kV Busbar tripped.

AEMO has received further information and now determines this was not a non-credible contingency event.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 27/01/2024

At 0138 hrs the Gin Gin (H6) No.2 275 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 is not known at this stage.


Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - QLD region - 23/01/2024

Refer AEMO Electricity Market Notice 113659

At 1122 hrs the H35 Strathmore No2 275 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.

Nebo - Strathmore 878 275 kV line to remain out of service.

See Network Outage Scheduler (NOS) for further details.

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

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 23/01/2024

At 0957 hrs the Strathmore No 2 275 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.
The following constraint set(s) invoked
Q-NESTM
Q-X_NQ_275_FDR+BUS

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 26/12/2023

At 2345 hrs the Strathmore Clare South 7208 and the Strathmore Clare South Tee King Creek 7128 132kV lines 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

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - QLD region - 21/12/2023

At 1424 hrs the H14 Middle Ridge 275 kV circuit breakers 5432 and 5422 tripped. This offloaded the H14 Middle Ridge No.2 and No.3 275/110 kV transformers.

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

AEMO ELECTRICITY MARKET NOTICE

Cancellation of Actual (LOR2) condition in the NSW region - 14/12/2023

The Actual LOR2 Condition in the NSW Region advised in AEMO Electricity Market Notice No.112362 is cancelled at 1810 hrs 14/12/2023.

Manager NEM Real Time Operations