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117243INTER-REGIONAL TRANSFER28/06/2024 04:54:33 PM
Inter-regional transfer limit variation - Dumaresq No. 1 330kV SVC - NSW region - 28/06/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Dumaresq No. 1 330kV SVC- NSW region - 28/06/2024
At 1649 hrs 28/06/2024 there was a short notice outage of the Dumaresq No. 1 330kV SVC.
The following constraint set invoked at 1650 hrs 28/06/2024
N-DM_SVC
This constraint set 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
Inter-regional transfer limit variation - Dumaresq No. 1 330kV SVC- NSW region - 28/06/2024
At 1649 hrs 28/06/2024 there was a short notice outage of the Dumaresq No. 1 330kV SVC.
The following constraint set invoked at 1650 hrs 28/06/2024
N-DM_SVC
This constraint set 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
117241INTER-REGIONAL TRANSFER28/06/2024 04:12:58 PM
Cancellation - Inter-regional transfer limit variation - constraint automation to manage Power System Security in VIC region - 28/06/2024
AEMO ELECTRICITY MARKET NOTICE
Cancellation - Inter-regional transfer limit variation - constraint automation to manage Power System Security in VIC region - 28/06/2024
Refer AEMO Electricity Market Notice 117239.
Constraint set CA_SYDS_5590C0E2 revoked 1530 hrs.
Manager NEM Real Time Operations
Cancellation - Inter-regional transfer limit variation - constraint automation to manage Power System Security in VIC region - 28/06/2024
Refer AEMO Electricity Market Notice 117239.
Constraint set CA_SYDS_5590C0E2 revoked 1530 hrs.
Manager NEM Real Time Operations
117240INTER-REGIONAL TRANSFER28/06/2024 02:20:05 PM
Inter-regional transfer limit variation - Liddell to Tomago 82 330kV Line - NSW region - 28/06/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Liddell to Tomago 82 330kV Line - NSW region - 28/06/2024
At 1407 hrs 28/06/2024 there was an unplanned outage of Liddell to Tomago 82 330kV Line.
The following constraint set invoked at 1415 hrs 28/06/2024
N-LDTM_82_OPEN
This constraint set contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Liddell to Tomago 82 330kV Line - NSW region - 28/06/2024
At 1407 hrs 28/06/2024 there was an unplanned outage of Liddell to Tomago 82 330kV Line.
The following constraint set invoked at 1415 hrs 28/06/2024
N-LDTM_82_OPEN
This constraint set contains equations with the following interconnectors on the LHS.
N-Q-MNSP1,NSW1-QLD1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
117239INTER-REGIONAL TRANSFER28/06/2024 02:07:43 PM
Inter-regional transfer limit variation - constraint automation to manage Power System Security in VIC region - 28/06/2024
AEMO ELECTRICITY MARKET NOTICE
In order to maintain the power system in a secure operating state in the VIC region, AEMO has invoked automated constraint set CA_SYDS_5590C0E2 from 1355hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
V-S-MNSP1
Refer to AEMO Network Outage Scheduler (NOS) for further information.
Manager NEM Real Time Operations
In order to maintain the power system in a secure operating state in the VIC region, AEMO has invoked automated constraint set CA_SYDS_5590C0E2 from 1355hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
V-S-MNSP1
Refer to AEMO Network Outage Scheduler (NOS) for further information.
Manager NEM Real Time Operations
117223RECLASSIFY CONTINGENCY27/06/2024 03:54:11 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: 27/06/2024 15:54
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 117219
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: NSW1
Lines: Bannaby - Mt Piper 5A6 500kV and Bannaby - Mt Piper 5A7 500kV
Cancellation time: 27/06/2024 15:54
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 117219
Auto-generated on behalf of Manager NEM Real Time Operations
117219RECLASSIFY CONTINGENCY27/06/2024 02:53:01 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: 27/06/2024 14:52 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
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: 27/06/2024 14:52 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
117212RECLASSIFY CONTINGENCY27/06/2024 10:09:04 AM
Update - Non-credible contingency event - NSW region - 27/06/2024
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - NSW region - 27/06/2024
Refer AEMO Electricity Market Notice 117210
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: NSW
Elements: Sydney West No.1 330 kV SVC and any single Sydney West 330/132 kV transformer
Duration: 0944 hrs 27/06/2024 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
Update - Non-credible contingency event - NSW region - 27/06/2024
Refer AEMO Electricity Market Notice 117210
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: NSW
Elements: Sydney West No.1 330 kV SVC and any single Sydney West 330/132 kV transformer
Duration: 0944 hrs 27/06/2024 until further notice
Constraint set(s) invoked: Nil
Manager NEM Real Time Operations
117211RECLASSIFY CONTINGENCY27/06/2024 09:19:05 AM
Cancellation 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
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: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Cancellation time: 27/06/2024 09:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 117209
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: TAS1
Lines: Farrell-John Butters and Farrell-Rosebery-Newton-Queenstown
Cancellation time: 27/06/2024 09:19
Constraint set(s) revoked:
NONE
Refer AEMO Electricity Market Notice 117209
Auto-generated on behalf of Manager NEM Real Time Operations
117210POWER SYSTEM EVENTS27/06/2024 09:01:59 AM
Non-credible contingency event - NSW region - 27/06/2024
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - NSW region - 27/06/2024
At 0845 hrs the Sydney West No.1 330 kV SVC tripped during switching for planned outage of Sydney West No.4 330/132 kV 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
Non-credible contingency event - NSW region - 27/06/2024
At 0845 hrs the Sydney West No.1 330 kV SVC tripped during switching for planned outage of Sydney West No.4 330/132 kV 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