Market Notices

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

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB2 TORRENS ISLAN

Refer to Market Notice 117719

Direction is cancelled from: 1630 hrs 20/08/2024

Manager NEM Real Time Operations

AEMO ELECTRICITY PARTICIPANT NOTICE.

Update Direction - AGL SA Generation Pty Limited - TORRB4 TORRENS ISLAN

Refer AEMO Electricity Participant Notice 117722


TORRB4 TORRENS ISLAND to synchronise at 0900 hrs 21/08/2024

This update is issued at 1600 hrs 20/08/2024 and is expected to stay in place until 1230 hrs 21/08/2024

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Direction - SA region 20/08/2024

Refer to Market Notice 117714


In accordance with section 116 of the National Electricity Law, AEMO is issuing a direction to AGL SA Generation Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1).

Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN at 1600 hrs 20/08/2024
Type of resource: generating unit
Required actions: remain synchronised and follow dispatch targets at 2330 hrs 20/08/2024
Services provided: Voltage Control
Circumstances necessitating the Direction: Voltage
Circumstances necessitating the Direction additional detail: intervention is required to maintain the power system in a secure operating state
Expected duration: 1430 hrs 21/08/2024 / further notice.

AGL SA Generation Pty Limited does not incur any civil monetary liability for a relevant action taken in accordance with this direction unless the action is taken in bad faith.

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

Cancellation: Direction issued to: AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN

Refer to Market Notice 117729

Direction is cancelled from: 1630 hrs 20/08/2024

Manager NEM Real Time Operations

AEMO ELECTRICITY PARTICIPANT NOTICE.

Update Direction - AGL SA Generation Pty Limited - TORRB3 TORRENS ISLAN

Refer AEMO Electricity Participant Notice 117718

TORRB3 TORRENS ISLAND end time update.

This update is issued at 1530 hrs 20/08/2024 and is expected to stay in place until 1630 hrs 20/08/2024

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.