Market Notices

119717RESERVE NOTICE01/11/2024 12:16:02 AM

STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the Qld Region on 07/11/2024

AEMO ELECTRICITY MARKET NOTICE

AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the Qld region for the following period[s]:

From 1800 hrs 07/11/2024 to 1830 hrs 07/11/2024.
The forecast capacity reserve requirement is 535 MW.
The minimum capacity reserve available is 515 MW.

AEMO is seeking a market response.

AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.

Manager NEM Real Time Operations
     
119716RESERVE NOTICE01/11/2024 12:14:08 AM

STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the Qld Region on 04/11/2024

AEMO ELECTRICITY MARKET NOTICE

AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the Qld region for the following period[s]:

[1.] From 1800 hrs 04/11/2024 to 1830 hrs 04/11/2024.
The forecast capacity reserve requirement is 535 MW.
The minimum capacity reserve available is 513 MW.

AEMO is seeking a market response.

AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.

Manager NEM Real Time Operations
     
119715RESERVE NOTICE31/10/2024 08:46:25 PM

STPASA - Forecast Lack Of Reserve Level 2 (LOR2) in the NSW Region on 07/11/2024

AEMO ELECTRICITY MARKET NOTICE

AEMO declares a Forecast LOR2 condition under clause 4.8.4(b) of the National Electricity Rules for the NSW region for the following period[s]:

From 1800 hrs 07/11/2024 to 1900 hrs 07/11/2024.
The forecast capacity reserve requirement is 730 MW.
The minimum capacity reserve available is 614 MW.

AEMO is seeking a market response.

AEMO has not yet estimated the latest time it would need to intervene through an AEMO intervention event.


Manager NEM Real Time Operations
     
119708RECLASSIFY CONTINGENCY31/10/2024 04:19:40 PM

Cancellation 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

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: NSW1

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

Cancellation time: 31/10/2024 16:19

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 119704

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119704RECLASSIFY CONTINGENCY31/10/2024 03:15:31 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: 31/10/2024 15:15 until further notice

Constraint set(s) invoked:
NONE

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119691POWER SYSTEM EVENTS31/10/2024 03:45:23 AM

Update - Non-credible contingency event - NSW region - 31/10/2024

AEMO ELECTRICITY MARKET NOTICE.

Update - Non-credible contingency event - NSW region - 31/10/2024

Refer AEMO Electricity Market Notice 119689

At 0345 hrs the Wagga B 330 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.

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

Manager NEM Real Time Operations
     
119689POWER SYSTEM EVENTS31/10/2024 12:49:14 AM

Non-credible contingency event - NSW region - 31/10/2024

AEMO ELECTRICITY MARKET NOTICE.

Non-credible contingency event - NSW region - 31/10/2024

At 0028 hrs the Wagga B 330 kV bus tripped which offloaded the Wagga - Walla Walla SF 6Y 330 kV line and Wagga No.3 transformer.

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
     
119669RECLASSIFY CONTINGENCY30/10/2024 12:30:56 PM

Cancellation of the reclassification of a Non-Credible contingency event: Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line in VIC due to Lightning.

AEMO ELECTRICITY MARKET NOTICE.

Cancellation of the 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: VIC

Lines: Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line

Cancellation time: 12:20 hrs 30/10/2024

Constraint set(s) revoked:
V-ROYP78_R_N-2

Refer AEMO Electricity Market Notice 119030

Manager NEM Real Time Operations
     
119596RECLASSIFY CONTINGENCY28/10/2024 03:39:41 PM

Cancellation of a Non-Credible Contingency Event: Armidale - Dumaresq 8C 330kV line and Armidale - Sapphire WF 8E 330kV line in NSW1 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: NSW1

Lines: Armidale - Dumaresq 8C 330kV and Armidale - Sapphire WF 8E 330kV

Cancellation time: 28/10/2024 15:39

Constraint set(s) revoked:
N-ARDM_ARSR_1PH_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1


Refer AEMO Electricity Market Notice 119561

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