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118322POWER SYSTEM EVENTS19/09/2024 04:16:27 PM
Update - Non-credible contingency event - TAS region - 19/09/2024
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 19/09/2024
Refer AEMO Electricity Market Notice 118321
At 1446 hrs the Gordon - Chapel St No 1 and No 2 220 kV lines were returned to service.
This non-credible contingency event was caused by lightning. 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.
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 19/09/2024
Refer AEMO Electricity Market Notice 118321
At 1446 hrs the Gordon - Chapel St No 1 and No 2 220 kV lines were returned to service.
This non-credible contingency event was caused by lightning. 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.
Manager NEM Real Time Operations
118321POWER SYSTEM EVENTS19/09/2024 03:28:41 PM
Update - Non-credible contingency event - TAS region - 19/09/2024
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - TAS region - 19/09/2024
At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines tripped.
AEMO did not instruct load shedding.
AEMO has advised of approximately 112 MW disconnection of bulk electrical load,
disconnection of generation at Studland Bay Wind generator (71 MW) and 23 MW generation reduction at Gordon Power station.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Update - Non-credible contingency event - TAS region - 19/09/2024
At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines tripped.
AEMO did not instruct load shedding.
AEMO has advised of approximately 112 MW disconnection of bulk electrical load,
disconnection of generation at Studland Bay Wind generator (71 MW) and 23 MW generation reduction at Gordon Power station.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
118320POWER SYSTEM EVENTS19/09/2024 01:54:59 PM
Non-credible contingency event - TAS region - 19/09/2024
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 19/09/2024
At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines 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 - TAS region - 19/09/2024
At 1340 hrs the Gordon - Chapel St No1 and No 2 220 kV lines 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
118319GENERAL NOTICE19/09/2024 01:45:31 PM
Planned outage of Tailem Bend - South East 275 kV transmission line in the South Australia region beginning on 20/09/2024
AEMO ELECTRICITY MARKET NOTICE
The Tailem Bend - South East No 1 275 kV line in the South Australian (SA) region is planned to be out of service from 2100 hrs on 20/09/2024 to 0530 hrs on 21/09/2024.
A credible contingency event during this planned outage could cause synchronous separation of the SA region from the rest of the NEM.
During this planned outage:
- Power transfer will be restricted across the VIC - SA interconnector (Heywood interconnector); and
- Post contingent FCAS will be sourced within SA following Separation event.
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
The Tailem Bend - South East No 1 275 kV line in the South Australian (SA) region is planned to be out of service from 2100 hrs on 20/09/2024 to 0530 hrs on 21/09/2024.
A credible contingency event during this planned outage could cause synchronous separation of the SA region from the rest of the NEM.
During this planned outage:
- Power transfer will be restricted across the VIC - SA interconnector (Heywood interconnector); and
- Post contingent FCAS will be sourced within SA following Separation event.
Refer AEMO Network Outage Schedule (NOS) for further details.
AEMO Operations
118301INTER-REGIONAL TRANSFER17/09/2024 12:21:32 PM
Inter-regional transfer limit variation -South East to Tailem Bend No 1 275 KV Line - SA region - 17/09/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - South East to Tailem Bend No 1 275 KV Line - SA region - 17/09/2024
At 1034 hrs 17/09/2024 there was a short notice outage of South East to Tailem Bend No 1 275 KV Line.
The following constraint set(s) invoked at 1035 hrs 20/09/2024
S-TBSE,
S-BC_CP
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,NSW1-QLD1,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - South East to Tailem Bend No 1 275 KV Line - SA region - 17/09/2024
At 1034 hrs 17/09/2024 there was a short notice outage of South East to Tailem Bend No 1 275 KV Line.
The following constraint set(s) invoked at 1035 hrs 20/09/2024
S-TBSE,
S-BC_CP
This constraint set(s) contains equations with the following interconnectors on the LHS.
V-SA,NSW1-QLD1,T-V-MNSP1,V-S-MNSP1,VIC1-NSW1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
118299RESERVE NOTICE16/09/2024 07:16:21 PM
Cancellation of Actual (LOR1) condition in the NSW region - 16/09/2024
AEMO ELECTRICITY MARKET NOTICE
Cancellation of Actual (LOR1) condition in the NSW region - 16/09/2024
The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.118298 is cancelled at 1915 hrs 16/09/2024.
Manager NEM Real Time Operations
Cancellation of Actual (LOR1) condition in the NSW region - 16/09/2024
The Actual LOR1 Condition in the NSW Region advised in AEMO Electricity Market Notice No.118298 is cancelled at 1915 hrs 16/09/2024.
Manager NEM Real Time Operations
118298RESERVE NOTICE16/09/2024 06:16:31 PM
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 16/09/2024
AEMO ELECTRICITY MARKET NOTICE
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 16/09/2024
An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1800 hrs.
The Actual LOR1 condition is forecast to exist until 1900 hrs
The capacity reserve requirement is 1400 MW
The minimum capacity reserve available is 1274 MW
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 1 (LOR1) in the NSW region - 16/09/2024
An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the NSW region from 1800 hrs.
The Actual LOR1 condition is forecast to exist until 1900 hrs
The capacity reserve requirement is 1400 MW
The minimum capacity reserve available is 1274 MW
Manager NEM Real Time Operations
118271INTER-REGIONAL TRANSFER14/09/2024 01:26:46 PM
Inter-regional transfer limit variation - Braemar No2 330 kV / 275 kV Transformer. - QLD region - 14/09/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Braemar No2 330 kV / 275 kV Transformer. - QLD region - 14/09/2024
At 1320 hrs 14/09/2024 there was a short notice outage of Braemar No2 330 kV / 275 kV Transformer.
The following constraint set(s) invoked at 1320 hrs 14/09/2024
Q-BRTX2
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Braemar No2 330 kV / 275 kV Transformer. - QLD region - 14/09/2024
At 1320 hrs 14/09/2024 there was a short notice outage of Braemar No2 330 kV / 275 kV Transformer.
The following constraint set(s) invoked at 1320 hrs 14/09/2024
Q-BRTX2
This constraint set(s) contains equations with the following interconnectors on the LHS.
NSW1-QLD1
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
118269INTER-REGIONAL TRANSFER13/09/2024 03:57:07 PM
Inter-regional transfer limit variation - Armidale - Sapphire 8E 330 KV Line - NSW region - 13/09/2024
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation - Armidale - Sapphire 8E 330 KV Line - NSW region - 13/09/2024
A planned outage of Armidale - Sapphire 8E 330 KV Line in the NSW region was scheduled from 1630 hrs 11/09/2024 to 1330 hrs 14/09/2024.
The outage has been completed and Armidale - Sapphire 8E 330 KV Line returned to service at 1600 hrs 13/09/2024
Constraint set(s) revoked: N-ARSR_8E, N-TW_SVC
Manager NEM Real Time Operations
Inter-regional transfer limit variation - Armidale - Sapphire 8E 330 KV Line - NSW region - 13/09/2024
A planned outage of Armidale - Sapphire 8E 330 KV Line in the NSW region was scheduled from 1630 hrs 11/09/2024 to 1330 hrs 14/09/2024.
The outage has been completed and Armidale - Sapphire 8E 330 KV Line returned to service at 1600 hrs 13/09/2024
Constraint set(s) revoked: N-ARSR_8E, N-TW_SVC
Manager NEM Real Time Operations