Market Notices

116145RECLASSIFY CONTINGENCY15/04/2024 11:34:50 PM

Reclassification of a Non-Credible Contingency Event: Bayswater - Mt Piper No.5A3 500kV line and Wollar - Mt Piper No.5A5 500kV line in NSW1 due to Lightning.

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: NSW1

Lines: Bayswater - Mt Piper No.5A3 500kV and Wollar - Mt Piper No.5A5 500kV

Duration: 15/04/2024 23:34 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
116144RECLASSIFY CONTINGENCY15/04/2024 10:54:50 PM

Reclassification of a Non-Credible Contingency Event: Chalumbin - Turkinje No.7165 132 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 due to Lightning.

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: Chalumbin - Turkinje No.7165 132 kV and Chalumbin - Turkinje No.7166 132 kV

Duration: 15/04/2024 22:54 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
116143RECLASSIFY CONTINGENCY15/04/2024 10:54:50 PM

Reclassification of a Non-Credible Contingency Event: Tumoulin - Woree No.877 275 kV line and Chalumbin - Turkinje No.7166 132 kV line in QLD1 due to Lightning.

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: Tumoulin - Woree No.877 275 kV and Chalumbin - Turkinje No.7166 132 kV

Duration: 15/04/2024 22:54 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
116142RECLASSIFY CONTINGENCY15/04/2024 08:54:31 PM

Cancellation of a Non-Credible Contingency Event: Ross ? Tully South No.8905/1 275 kV line line and Cardwell ? Tully No.7389 132kV line line in QLD1 due to Lightning.

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: Ross ? Tully South No.8905/1 275 kV line and Cardwell ? Tully No.7389 132kV line

Cancellation time: 15/04/2024 20:54

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 116141

Auto-generated on behalf of Manager NEM Real Time Operations
     
116141RECLASSIFY CONTINGENCY15/04/2024 05:50:05 PM

Reclassification of a Non-Credible Contingency Event: Ross ? Tully South No.8905/1 275 kV line line and Cardwell ? Tully No.7389 132kV line line in QLD1 due to Lightning.

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: Ross ? Tully South No.8905/1 275 kV line and Cardwell ? Tully No.7389 132kV line

Duration: 15/04/2024 17:49 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
     
116140INTER-REGIONAL TRANSFER15/04/2024 04:59:01 PM

Inter-regional transfer limit variation - Tamworth No1 SVC Protection system- NSW region - 15/04/2024

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Tamworth No1 SVC Protection system - NSW region - 15/04/2024

At 1635 hrs 15/04/2024 there was a short notice outage of Tamworth No1 SVC protection system.

The following constraint set(s) invoked at 1650 hrs 15/04/2024
N-TW_SVC

This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
     
116130INTER-REGIONAL TRANSFER15/04/2024 12:08:58 PM

Inter-regional transfer limit variation - Tamworth No1 SVC - NSW region - 15/04/2024

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Tamworth No1 SVC - NSW region - 15/04/2024

At 1155 hrs 15/04/2024 there was an unplanned outage of Tamworth No1 SVC.

The following constraint set(s) invoked at 1200 hrs 15/04/2024
N-TW_SVC

This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1

Refer to the AEMO Network Outage Scheduler for further information.

Manager NEM Real Time Operations
     
116125INTER-REGIONAL TRANSFER15/04/2024 07:11:32 AM

Inter-regional transfer limit variation - Armidale 1 330kV SVC - NSW region - 15/04/2024

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Armidale 1 330kV SVC - NSW region - 15/04/2024

A planned outage of Armidale 1 330kV SVC in the NSW region was scheduled from 0700 hrs 15/04/2024 to 1500 hrs 20/04/2024.

The outage has been cancelled at 0700 hrs 15/04/2024

Constraint set(s) revoked: N-AR_VC1
This constraint set(s) contains equations with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1

Manager NEM Real Time Operations
     
116086INTER-REGIONAL TRANSFER11/04/2024 02:57:43 PM

Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024

A planned outage of Hazelwood - South Morang No. 1 500 kV Line in the Vic region was scheduled from 0630 hrs 11/04/2024 to 1830 hrs 11/04/2024.

The outage has been completed and Hazelwood - South Morang No. 1 500 kV Line returned to service at 1450 hrs 11/04/2024.

Constraint set revoked: V-HWSM

Manager NEM Real Time Operations
     
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