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125294RECLASSIFY CONTINGENCY05/03/2025 07:19:30 PM
Cancellation of a Non-Credible Contingency Event: Collinsville North - Proserpine No.7125 132 kV line and Collinsville North - Proserpine No.7126 132 kV 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: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV
Cancellation time: 05/03/2025 19:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125276
Auto-generated on behalf of Manager NEM Real Time Operations
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: 05/03/2025 19:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 125276
Auto-generated on behalf of Manager NEM Real Time Operations
125293SETTLEMENTS RESIDUE05/03/2025 07:05:24 PM
[EventId:202503051905_NRM_NSW1_VIC1_stopped] NEGRES CONSTRAINT NRM_NSW1_VIC1 ceased operating from 05 March 2025 19:05
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1905 hrs on 5 March 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 5 March 2025.
Refer to market notice: 125282
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 1905 hrs on 5 March 2025.
This is an AEMO autogenerated Market Notice.
Issued by Australian Energy Market Operator Ltd at 1905 hrs on 5 March 2025
CANCELLATION - ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 5 March 2025.
Refer to market notice: 125282
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 1905 hrs on 5 March 2025.
This is an AEMO autogenerated Market Notice.
125282SETTLEMENTS RESIDUE05/03/2025 06:05:16 PM
[EventId:202503051805_NRM_NSW1_VIC1_started] NEGRES CONSTRAINT NRM_NSW1_VIC1 started operating from 05 March 2025 18:05
AEMO ELECTRICITY MARKET NOTICE
Issued by Australian Energy Market Operator Ltd at 1805 hrs on 5 March 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 5 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 1805 hrs on 5 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 1805 hrs on 5 March 2025
ACTUAL NEGATIVE SETTLEMENT RESIDUES - NSW to VIC - 5 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 1805 hrs on 5 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.
125278INTER-REGIONAL TRANSFER05/03/2025 04:48:22 PM
Inter-regional transfer limit variation - Liddell - Tomago 82 330kV Line - NSW region - 05/03/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Liddell - Tomago 82 330kV Line - NSW region - 05/03/2025
A planned outage of Liddell - Tomago 82 330kV Line in the NSW region was scheduled from 0600 hrs 03/03/2025 to 1600 hrs 06/03/2025.
The outage has been completed and Liddell - Tomago 82 330kV Line returned to service at 1635 hrs 05/03/2025
Constraint set(s) revoked: N-LDTM_82
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Liddell - Tomago 82 330kV Line - NSW region - 05/03/2025
A planned outage of Liddell - Tomago 82 330kV Line in the NSW region was scheduled from 0600 hrs 03/03/2025 to 1600 hrs 06/03/2025.
The outage has been completed and Liddell - Tomago 82 330kV Line returned to service at 1635 hrs 05/03/2025
Constraint set(s) revoked: N-LDTM_82
Manager NEM Real Time Operations
125277INTER-REGIONAL TRANSFER05/03/2025 04:18:40 PM
Inter-regional transfer limit variation - Ewingsdale-Mullumbimby 9G5 132kV line - NSW region - 05/03/2025
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Ewingsdale-Mullumbimby 9G5 132kV line - NSW region - 05/03/2025
At 1603 hrs 05/03/2025 there was an unplanned outage of Ewingsdale-Mullumbimby 9G5 132kV line.
The following constraint set(s) invoked at 1615 hrs 05/03/2025
N-BAMB_132_OPEN
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Ewingsdale-Mullumbimby 9G5 132kV line - NSW region - 05/03/2025
At 1603 hrs 05/03/2025 there was an unplanned outage of Ewingsdale-Mullumbimby 9G5 132kV line.
The following constraint set(s) invoked at 1615 hrs 05/03/2025
N-BAMB_132_OPEN
This constraint set(s) contains equations with the following interconnectors on the LHS.
N-Q-MNSP1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
125276RECLASSIFY CONTINGENCY05/03/2025 04:14:25 PM
Reclassification of a Non-Credible Contingency Event: Collinsville North - Proserpine No.7125 132 kV line and Collinsville North - Proserpine No.7126 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: Collinsville North - Proserpine No.7125 132 kV and Collinsville North - Proserpine No.7126 132 kV
Duration: 05/03/2025 16:14 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
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: 05/03/2025 16:14 until further notice
Constraint set(s) invoked:
NONE
Auto-generated on behalf of Manager NEM Real Time Operations
125273POWER SYSTEM EVENTS05/03/2025 02:03:49 PM
Update - Non-credible contingency event - NSW region - 05/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 05/03/2025
Refer AEMO Electricity Market Notice 125268
At 1400 hrs the Directlink DC1 was returned to service.
(At 1030 hrs the Ewingsdale-Mullumbimby 9G5 132kV line 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
Update - Non-credible contingency event - NSW region - 05/03/2025
Refer AEMO Electricity Market Notice 125268
At 1400 hrs the Directlink DC1 was returned to service.
(At 1030 hrs the Ewingsdale-Mullumbimby 9G5 132kV line 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
125268POWER SYSTEM EVENTS05/03/2025 11:57:45 AM
Non-credible contingency event - NSW region - 05/03/2025
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 05/03/2025
At 1030 hrs the Ewingsdale-Mullumbimby 9G5 132kV line and the Directlink DC1 tripped.
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 - NSW region - 05/03/2025
At 1030 hrs the Ewingsdale-Mullumbimby 9G5 132kV line and the Directlink DC1 tripped.
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
125267INTER-REGIONAL TRANSFER05/03/2025 10:51:27 AM
Inter-Regional Transfer limit variation - Directlink - NSW Region
AEMO ELECTRICITY MARKET NOTICE
Inter-Regional Transfer limit variation - Directlink - NSW Region
There has been an unplanned outage of the No 1 Leg of Directlink .
The following constraint set was invoked at 1040 hrs 05/03/2025
N-X_MBTE_2
The constraint set contains the following interconnector on the left hand side.
N-Q-MNSP1
Refer AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations
Inter-Regional Transfer limit variation - Directlink - NSW Region
There has been an unplanned outage of the No 1 Leg of Directlink .
The following constraint set was invoked at 1040 hrs 05/03/2025
N-X_MBTE_2
The constraint set contains the following interconnector on the left hand side.
N-Q-MNSP1
Refer AEMO Network Outage Scheduler (NOS) for further details.
Manager NEM Real Time Operations