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125550POWER SYSTEM EVENTS12/03/2025 09:47:07 AM
Update - Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 12/03/2025
Refer AEMO Electricity Market Notice 125548
At 09:29 hrs the Burnie - Smithton Tee Port Latta No. 1 110kV Line and the Burnie - Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed (2nd event).
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: TAS
Elements: Burnie - Smithton Tee Port Latta No. 1 110kV Line and Burnie - Smithton Tee Port Latta No. 2 110kV Line
Duration: 0940 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 12/03/2025
Refer AEMO Electricity Market Notice 125548
At 09:29 hrs the Burnie - Smithton Tee Port Latta No. 1 110kV Line and the Burnie - Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed (2nd event).
The cause of this non credible contingency event is not known at this stage.
AEMO is not satisfied that this non credible event is unlikely to re-occur.
AEMO has therefore reclassified this event as a credible contingency event until further notice.
Region: TAS
Elements: Burnie - Smithton Tee Port Latta No. 1 110kV Line and Burnie - Smithton Tee Port Latta No. 2 110kV Line
Duration: 0940 hrs 12/03/2025 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
125548POWER SYSTEM EVENTS12/03/2025 09:46:32 AM
Non-credible contingency event - TAS region - 12/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/03/2025
At 0909 hrs the Burnie -Smithton Tee Port Latta No. 1 110kV Line and the Burnie -Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed.
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
Non-credible contingency event - TAS region - 12/03/2025
At 0909 hrs the Burnie -Smithton Tee Port Latta No. 1 110kV Line and the Burnie -Smithton Tee Port Latta No. 2 110kV Line tripped and auto-reclosed.
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
125521NON-CONFORMANCE11/03/2025 11:55:21 AM
NON-CONFORMANCE Region NSW1 Tuesday, 11 March 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE NSW1 Region Tuesday, 11 March 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 11/03/2025 11:25 to 11/03/2025 11:55
Amount: -9 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE NSW1 Region Tuesday, 11 March 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: WTAHB1
Duration: 11/03/2025 11:25 to 11/03/2025 11:55
Amount: -9 MW
Constraint: NC-N_WTAHB1
Auto-generated on behalf of Manager NEM Real Time Operations
125517POWER SYSTEM EVENTS11/03/2025 10:05:23 AM
Non-credible contingency event - SA region - 11/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 11/03/2025
At 0917 hrs the Penola West - South East 132 kV line and the Kincraig - Penola West 132 kV line tripped.
AEMO did not instruct load shedding.
Approximately 3 MW of electrical load has been disconnected.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 11/03/2025
At 0917 hrs the Penola West - South East 132 kV line and the Kincraig - Penola West 132 kV line tripped.
AEMO did not instruct load shedding.
Approximately 3 MW of electrical load has been disconnected.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
125516SETTLEMENTS RESIDUE11/03/2025 09:30:23 AM
[EventId:202503110930_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 11 March 2025 09:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 11 March 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 11 March 2025.
Refer to market notice: 125514
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the NSW to VIC directional interconnector.
The negative residue constraint NRM_NSW1_VIC1 ceased operating at 0930 hrs on 11 March 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 0930 hrs on 11 March 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 11 March 2025.
Refer to market notice: 125514
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the NSW to VIC directional interconnector.
The negative residue constraint NRM_NSW1_VIC1 ceased operating at 0930 hrs on 11 March 2025.
This is an AEMO autogenerated Market Notice.
125514SETTLEMENTS RESIDUE11/03/2025 08:30:33 AM
[EventId:202503110830_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 11 March 2025 08:30
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 0830 hrs on 11 March 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 11 March 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the NSW to VIC directional interconnector.
The negative residue constraint set NRM_NSW1_VIC1 commenced operating from 0830 hrs on 11 March 2025.
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.
Issued by Australian Energy Market Operator Ltd at 0830 hrs on 11 March 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 11 March 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the NSW to VIC directional interconnector.
The negative residue constraint set NRM_NSW1_VIC1 commenced operating from 0830 hrs on 11 March 2025.
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.
125474NON-CONFORMANCE10/03/2025 01:05:17 PM
NON-CONFORMANCE Region QLD1 Monday, 10 March 2025
AEMO ELECTRICITY MARKET NOTICE
NON-CONFORMANCE QLD1 Region Monday, 10 March 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 10/03/2025 13:00 to 10/03/2025 13:05
Amount: -11 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
NON-CONFORMANCE QLD1 Region Monday, 10 March 2025
AEMO has declared the following unit as non-conforming under clause 3.8.23 of the National Electricity Rules:
Unit: MPP_1
Duration: 10/03/2025 13:00 to 10/03/2025 13:05
Amount: -11 MW
Constraint: NC-Q_MPP_1
Auto-generated on behalf of Manager NEM Real Time Operations
125394SETTLEMENTS RESIDUE08/03/2025 03:00:23 PM
[EventId:202503081500_NRM_VIC1_SA1_stopped] NEGRES CONSTRAINT NRM_VIC1_SA1 ceased operating from 08 March 2025 15:00
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1500 hrs on 8 March 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.
Refer to market notice: 125380
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.
The negative residue constraint NRM_VIC1_SA1 ceased operating at 1500 hrs on 8 March 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1500 hrs on 8 March 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.
Refer to market notice: 125380
AEMO has ceased taking action to minimize the further accumulation of negative settlement residues on the VIC to SA directional interconnector.
The negative residue constraint NRM_VIC1_SA1 ceased operating at 1500 hrs on 8 March 2025.
This is an AEMO autogenerated Market Notice.
125380SETTLEMENTS RESIDUE08/03/2025 01:10:28 PM
[EventId:202503081310_NRM_VIC1_SA1_started] NEGRES CONSTRAINT NRM_VIC1_SA1 started operating from 08 March 2025 13:10
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1310 hrs on 8 March 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1310 hrs on 8 March 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1310 hrs on 8 March 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - VIC to SA - 8 March 2025.
Electricity Market outcomes have resulted in the accumulation of negative settlement residues that have exceeded the allowable negative residue threshold for the VIC to SA directional interconnector.
The negative residue constraint set NRM_VIC1_SA1 commenced operating from 1310 hrs on 8 March 2025.
This constraint set contains an equation with the following interconnectors on the LHS:
V-S-MNSP1
V-SA
The RHS of the constraint equation may be adjusted to manage residues.
This is an AEMO autogenerated Market Notice.