Market Notices

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 1330 hrs 25/11/2021

I-ML_ZERO

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

V-S-MNSP1

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

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: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Duration: 25/11/2021 13:12 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

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: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Cancellation time: 25/11/2021 12:24

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 92703

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: QLD1

Lines: Collinsville North - Stoney Creek No.7306 132 kV and Collinsville North - Newlands No.7121 132 kV

Duration: 25/11/2021 11:10 until further notice

Constraint set(s) invoked: Nil

Manager NEM Real Time Operations

AEMO ELECTRICITY MARKET NOTICE

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

AEMO considers the trip of the following transmission equipment is no longer reasonably possible. Accordingly, its classification has reverted to a non-credible contingency event.

Region: NSW

Elements: Armidale No. 6 330kV/132kV Transformer and Armidale No. 1 330 kV SVC.

Cancellation time: 0905 hrs 25/11/2021

Constraint set(s) revoked:
Nil

Refer AEMO Electricity Market Notice 92700

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: QLD1

Lines: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV

Duration: 25/11/2021 08:21 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations

Change Number: CHG0071346

Notification issued to: Market Notice

Notification Type: Initial

Change Type: Normal

Service/ Component: Portfolio Management System

Change Title: WDR Portfolio Management System Maintenance

Change Start Date & Time: 29/11/2021 08:00:00 AEST

Change End Date & Time: 29/11/2021 17:30:41 AEST

Outage Start Date & Time: 29/11/2021 08:00:13 AEST

Outage End Date & Time: 29/11/2021 17:30:54 AEST

Environment: Pre-Production

Participant Impact and Requirements: The outage is required to deploy defect fixes and improvements to the user interfaces. Users will not be able to access the Portfolio Management System during the outage.

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

Based on advice from the asset owner, if Armidale No 6 Transformer trips, Armidale No. 1 330 kV SVC will trip due to an auxiliary supply issue, therefore AEMO considers the simultaneous trip of the following elements to now be more likely and reasonably possible.

Accordingly, AEMO has reclassified it as a credible contingency event.

Region: NSW

Elements: Armidale No. 6 330kV/132kV Transformer and Armidale No. 1 330 kV SVC.

Duration: 25/11/2021 0800 hrs until further notice

Constraint set(s) invoked: Nil

Constraint set contains the following interconnector(s) on the left hand side:
Nil

Manager NEM Real Time Operations

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: QLD1

Lines: Collinsville Nth-Clare Sth Tee King Creek 7128 132kV and Strathmore-Clare South 7208 132kV

Cancellation time: 25/11/2021 05:30

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 92698

Manager NEM Real Time Operations