Market Notices

AEMO ELECTRICITY MARKET NOTICE

Cancellation of reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits is no longer reasonably possible. There is no longer any lightning activity in the vicinity of the following lines. Accordingly its classification has reverted to a non-credible contingency event.

Region: VIC1

Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV

Cancellation time: 21/08/2024 01:59

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 117735

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non-Credible Contingency Event as a Credible Contingency Event due to Lightning. AEMO considers the simultaneous trip of the following circuits to now be more likely and reasonably possible. Accordingly AEMO has reclassified it as a credible contingency event.

Region: VIC1

Lines: Eildon PS - Mt Beauty No.1 220 kV and Eildon PS - Mt Beauty No.2 220 kV

Duration: 20/08/2024 20:56 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Reclassification of a Non Credible Contingency Event: Trip of Golden Plains No. 1 220 kV bus - Vic region - 20/08/2024

Based on advice from the TNSP, AEMO has reclassified the trip of Golden Plains No. 1 220 kV bus as a credible contingency event.

Constraint Set invoked: NIL

Duration: 20/08/2024 1750 hrs until further notice

Manager NEM Real Time Operations

Change Number: CHG0095840

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Cohesity

Change Title: AEMO will be undertaking maintenance activities on the DWGM system

Change Start Date & Time: 20/08/2024 18:30:35 AEST
Change End Date & Time: 21/08/2024 01:30:35 AEST
Outage Start Date & Time:
Outage End Date & Time:

Environment: Production

Participant Impact and Requirements:
AEMO will be undertaking maintenance activities on the DWGM system. Whilst no outage is expected there is potential for transient performance degradation during the change.

Support Information:
Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?d=pp_services_status for any planned/unplanned maintenance activities .

AEMO ELECTRICITY MARKET NOTICE.

Cancellation of the reclassification of a Non-Credible contingency event as a Credible contingency event.

AEMO no longer considers the H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers to be vulnerable due to lightning. Accordingly, its classification has reverted to a non-credible contingency event.

Region: Qld

Transmission Equipment: H14 Middle Ridge No. 2 and No. 3 275/110 kV transformers.

Constraint(s): NIL
Cancellation time: 1500 hrs

Refer AEMO Electricity Market Notice 112974

Manager NEM Real Time Operations

Change Number: CHG0091298

Notification issued to: Market Notice

Notification Type: Completed

Change Type: Normal

Service/Component: Market Network

Change Title: Change to MarketNet SSL VPN

Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Kerang to Wemen 220kV line - VIC region - 20/08/2024

A planned outage of Kerang to Wemen 220kV line in the VIC region was scheduled from 0600 hrs 20/08/2024 to 1930 hrs 20/08/2024.

The outage has been completed and Kerang to Wemen 220kV line returned to service at 0925 hrs 20/08/2024

Constraint set revoked: V-KGWT

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Inter-Regional Transfer limit variation - Murraylink

There has been an unplanned outage of the Murraylink interconnector.

The following constraint set was invoked at 2155 hrs 19/08/2024

I-MURRAYLINK

The constraint set contains the following interconnector on the left hand side.

V-S-MNSP1,VIC1-NSW1

Refer to AEMO Network Outage Scheduler (NOS) for further details.

Manager NEM Real Time Operations

Change Number: CHG0093465

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Cohesity

Change Title: AEMO will be undertaking maintenance activities on the STTM system.

Change Start Date & Time: 20/08/2024 18:31:12 AEST

Change End Date & Time: 21/08/2024 08:31:12 AEST

Outage Start Date & Time:

Outage End Date & Time:

Environment: Production

Participant Impact and Requirements: AEMO will be undertaking maintenance activities on the STTM system. Whilst no outage is expected there is potential for transient performance degradation during the change.

Support Information:

Report any impacts to the AEMO Information and Support Hub or call 1300 236 600.
Please refer to https://aemo.service-now.com/participantportal?d=pp_services_status for any planned/unplanned maintenance activities .