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116160POWER SYSTEM EVENTS17/04/2024 04:29:44 AM
Non-credible contingency event - VIC region - 17/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - VIC region - 17/04/2024
At 0414 hrs the Heywood No 2 500 kV bus 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 - VIC region - 17/04/2024
At 0414 hrs the Heywood No 2 500 kV bus 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
116154INTER-REGIONAL TRANSFER16/04/2024 12:02:05 PM
Inter-regional transfer limit variation - constraint automation to manage Power System Security in SA region - 16/04/2024
AEMO ELECTRICITY MARKET NOTICE
In order to maintain the power system in a secure operating state in the SA region, AEMO has invoked automated constraint set CA_BRIS_55306556 from 1150 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
V-SA
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 SA region, AEMO has invoked automated constraint set CA_BRIS_55306556 from 1150 hrs until further notice.
This constraint set contains equations with the following interconnector on the LHS;
V-SA
Refer to AEMO Network Outage Scheduler (NOS) for further information.
Manager NEM Real Time Operations
116140INTER-REGIONAL TRANSFER15/04/2024 04:59:01 PM
Inter-regional transfer limit variation - Tamworth No1 SVC Protection system- NSW region - 15/04/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Tamworth No1 SVC Protection system - NSW region - 15/04/2024
At 1635 hrs 15/04/2024 there was a short notice outage of Tamworth No1 SVC protection system.
The following constraint set(s) invoked at 1650 hrs 15/04/2024
N-TW_SVC
This constraint set(s) 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 - Tamworth No1 SVC Protection system - NSW region - 15/04/2024
At 1635 hrs 15/04/2024 there was a short notice outage of Tamworth No1 SVC protection system.
The following constraint set(s) invoked at 1650 hrs 15/04/2024
N-TW_SVC
This constraint set(s) 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
116130INTER-REGIONAL TRANSFER15/04/2024 12:08:58 PM
Inter-regional transfer limit variation - Tamworth No1 SVC - NSW region - 15/04/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Tamworth No1 SVC - NSW region - 15/04/2024
At 1155 hrs 15/04/2024 there was an unplanned outage of Tamworth No1 SVC.
The following constraint set(s) invoked at 1200 hrs 15/04/2024
N-TW_SVC
This constraint set(s) 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 - Tamworth No1 SVC - NSW region - 15/04/2024
At 1155 hrs 15/04/2024 there was an unplanned outage of Tamworth No1 SVC.
The following constraint set(s) invoked at 1200 hrs 15/04/2024
N-TW_SVC
This constraint set(s) 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
116125INTER-REGIONAL TRANSFER15/04/2024 07:11:32 AM
Inter-regional transfer limit variation - Armidale 1 330kV SVC - NSW region - 15/04/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Armidale 1 330kV SVC - NSW region - 15/04/2024
A planned outage of Armidale 1 330kV SVC in the NSW region was scheduled from 0700 hrs 15/04/2024 to 1500 hrs 20/04/2024.
The outage has been cancelled at 0700 hrs 15/04/2024
Constraint set(s) revoked: N-AR_VC1
This constraint set(s) contains equations with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Armidale 1 330kV SVC - NSW region - 15/04/2024
A planned outage of Armidale 1 330kV SVC in the NSW region was scheduled from 0700 hrs 15/04/2024 to 1500 hrs 20/04/2024.
The outage has been cancelled at 0700 hrs 15/04/2024
Constraint set(s) revoked: N-AR_VC1
This constraint set(s) contains equations with the following interconnectors on the LHS:
N-Q-MNSP1
NSW1-QLD1
Manager NEM Real Time Operations
116098POWER SYSTEM EVENTS12/04/2024 01:39:23 PM
Update - Non-credible contingency event - TAS region - 12/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 12/04/2024
Refer AEMO Electricity Market Notice 116095
At 1304 hrs the Sheffield - Farrell No.2 220 kV 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 - TAS region - 12/04/2024
Refer AEMO Electricity Market Notice 116095
At 1304 hrs the Sheffield - Farrell No.2 220 kV 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
116095POWER SYSTEM EVENTS12/04/2024 11:22:09 AM
Non-credible contingency event - TAS region - 12/04/2024
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 12/04/2024
At 1048 hrs the Sheffield - Farrell No.2 220 kV line tripped during restoration due to fault on the line.
AEMO did not instruct load shedding.
AEMO has been advised of disconnection of major industrial load approximately 550 MW.
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 - 12/04/2024
At 1048 hrs the Sheffield - Farrell No.2 220 kV line tripped during restoration due to fault on the line.
AEMO did not instruct load shedding.
AEMO has been advised of disconnection of major industrial load approximately 550 MW.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
116086INTER-REGIONAL TRANSFER11/04/2024 02:57:43 PM
Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024
A planned outage of Hazelwood - South Morang No. 1 500 kV Line in the Vic region was scheduled from 0630 hrs 11/04/2024 to 1830 hrs 11/04/2024.
The outage has been completed and Hazelwood - South Morang No. 1 500 kV Line returned to service at 1450 hrs 11/04/2024.
Constraint set revoked: V-HWSM
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Hazelwood - South Morang No. 1 500 kV Line - Vic region - 11/04/2024
A planned outage of Hazelwood - South Morang No. 1 500 kV Line in the Vic region was scheduled from 0630 hrs 11/04/2024 to 1830 hrs 11/04/2024.
The outage has been completed and Hazelwood - South Morang No. 1 500 kV Line returned to service at 1450 hrs 11/04/2024.
Constraint set revoked: V-HWSM
Manager NEM Real Time Operations
116082INTER-REGIONAL TRANSFER11/04/2024 02:28:10 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 3 Leg of Directlink .
The following constraint set was invoked at 0225 hrs 11/04/2024
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 3 Leg of Directlink .
The following constraint set was invoked at 0225 hrs 11/04/2024
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