Market Notices

117454RECLASSIFY CONTINGENCY25/07/2024 10:44:01 PM

Reclassification of a Non-Credible Contingency Event: Farrell-John Butters line and Farrell-Rosebery-Newton-Queenstown line in TAS1 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: TAS1

Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown

Duration: 25/07/2024 22:43 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
117453RECLASSIFY CONTINGENCY25/07/2024 08:59:26 PM

Cancellation of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 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: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Cancellation time: 25/07/2024 20:59

Constraint set(s) revoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Refer AEMO Electricity Market Notice 117451

Auto-generated on behalf of Manager NEM Real Time Operations
117452RECLASSIFY CONTINGENCY25/07/2024 07:59:25 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: 25/07/2024 19:59

Constraint set(s) revoked:
NONE

Refer AEMO Electricity Market Notice 117450

Auto-generated on behalf of Manager NEM Real Time Operations
117451RECLASSIFY CONTINGENCY25/07/2024 06:56:46 PM

Reclassification of a Non-Credible Contingency Event: Bannaby - Mt Piper 5A6 500kV line and Bannaby - Mt Piper 5A7 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: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV

Duration: 25/07/2024 18:56 until further notice

Constraint set(s) invoked:
N-5A6+5A7_N-2 Constraint set contains the following interconnector(s) on the left hand side:
N-Q-MNSP1
NSW1-QLD1
VIC1-NSW1


Auto-generated on behalf of Manager NEM Real Time Operations
117450RECLASSIFY CONTINGENCY25/07/2024 06:56:45 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: 25/07/2024 18:56 until further notice

Constraint set(s) invoked:
NONE

Auto-generated on behalf of Manager NEM Real Time Operations
117440SETTLEMENTS RESIDUE25/07/2024 11:15:22 AM

[EventId:202407251115_NRM_VIC1_NSW1_stopped] NEGRES CONSTRAINT NRM_VIC1_NSW1 ceased operating from 25 July 2024 11:15

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1115 hrs on 25 July 2024

CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 25 July 2024.

Refer to market notice: 117439

AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to NSW directional interconnector.

The negative residue constraint NRM_VIC1_NSW1 ceased operating at 1115 hrs on 25 July 2024.

This is an AEMO autogenerated Market Notice.
117439SETTLEMENTS RESIDUE25/07/2024 10:00:21 AM

[EventId:202407251000_NRM_VIC1_NSW1_started] NEGRES CONSTRAINT NRM_VIC1_NSW1 started operating from 25 July 2024 10:00

AEMO ELECTRICITY MARKET NOTICE

Issued by Australian Energy Market Operator Ltd at 1000 hrs on 25 July 2024

ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to NSW - 25 July 2024.

Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to NSW directional interconnector.

The negative residue constraint set NRM_VIC1_NSW1 commenced operating from 1000 hrs on 25 July 2024.

This constraint set contains an equation with the following interconnectors on the LHS:
VIC1-NSW1

The RHS of the constraint equation may be adjusted to manage residues.


This is an AEMO autogenerated Market Notice.
117412MARKET SYSTEMS22/07/2024 09:52:44 AM

CHG0090458 | Completed | Production | Planned Maintenance to Brisbane Internet firewall.

Change Number: CHG0090458
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: Internet Access
Change Title: Planned Maintenance to Brisbane Internet firewall.
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
117403MARKET SYSTEMS21/07/2024 02:12:21 PM

CHG0091275 | Completed | Production | MSATS - eMDM Maintenance AKS v1.28 upgrade

Change Number: CHG0091275
Notification issued to: Market Notice
Notification Type: Completed
Change Type: Normal
Service/Component: MSATS - Consumer Administration and Transfer Solution(CATS)
Change Title: MSATS - eMDM Maintenance AKS v1.28 upgrade
Support Information: Report any impacts to the AEMO Information and Support Hub or on External 1300 236 600.
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