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Update: Significant power system event - Victoria Region - Hazelwood transformers -13/02/2024
At 1827 hrs 13/02/2024 At Hazelwood terminal station in the Victoria region, the following plant was returned to service.
The No1 500 kV / 220 kV transformer
The No2 500 kV / 220 kV transformer
The No3 500 kV / 220 kV transformer
The No4 500 kV / 220 kV transformer
The Jeeralang - Hazelwood No 2 220kV line remains out of service.
Refer to Network outage scheduler (NOS) for further details.
Refer Market notice 114641 and 114643
This Market Notice is issued in accordance with NER clause 4.8.3.
Manager NEM Real Time Operations
Significant power system event - Victoria Region - Hazelwood transformers -13/02/2024
At 1543 hrs 13/02/2024 At Hazelwood terminal station in the Victoria region the following plant tripped.
The No1 500 kV / 220 kV transformer
The No2 500 kV / 220 kV transformer
The No3 500 kV / 220 kV transformer
The No4 500 kV / 220 kV transformer
The Jeeralang Hazelwood No2 220kV line.
Refer Market notice 114641
Updates will be provided as additional information becomes available.
This Market Notice is issued in accordance with NER clause 4.8.3.
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 13/02/2024
Non-credible contingency event - TAS region - 13/02/2024
At 1602 hrs the Norwood -Scottsdale 110kV line and the Norwood - Scottsdale -Derby 110kV line tripped.
AEMO did not instruct load shedding.
AEMO has been advised 8MW of electrical load and 24MW of generation has been disconnected.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Significant power system event - Victoria region - 13/02/2024
At 1308 hrs 13/02/2024 the Moorabool Sydenham No1 and No2 500 kV lines tripped.
There have been reports of towers on the ground.
In the Victorian region
1000 MW of customer load lost during the fault has been restored
2690 Generation tripped
The AEMO instructed loadshed of 300 MW is being progressively restored.
Updates will be provided as additional information becomes available.
This Market Notice is issued in accordance with NER clause 4.8.3.
Manager NEM Real Time Operations
Load Shedding Direction in the Vic Region
Load Shedding Direction in the Vic Region
AEMO has directed load shedding commencing at 1420 hrs 13/02/2024
in the Victoria region to restore power system security.
The direction was issued under section 116 of the NEL, and was a clause 4.8.9 instruction under the NER.
Manager NEM Real Time Operations
Significant power system event - 13 Feb 2024
Significant power system event - 13 Feb 2024
At 1308 hrs 13/02/2024 a significant power system event occurred.
Description of event - Multiple tripping of generation and transmission lines in the Vic region
Transmission element(s) tripped - Moorabool Sydenham No1 and No2 500 kV lines tripped
Region/s - Vic
Load interrupted - in excess of 1000 MW
Generation volume tripped - 2300 MW
Updates will be provided as additional information becomes available.
This Market Notice is issued in accordance with NER clause 4.8.3.
Manager NEM Real Time Operations
STPASA - Suspect Lack Of Reserve Level 3 (LOR3) in the QLD Region on 01/02/2024
AEMO considers that there are suspect Forecast LOR3 conditions for the QLD region for the following periods:
1. From 0900 hrs to 1000 hrs 01/02/2024.
The maximum load (other than interruptible loads) forecast to be interrupted is 38 MW at 0930 hrs.
2. From 1130 hrs to 1200 hrs 01/02/2024.
The maximum load (other than interruptible loads) forecast to be interrupted is 62 MW at 1130 hrs.
AEMO is currently investigating these LOR3 forecast conditions to confirm whether they are valid.
AEMO Operations
Cancellation - Non-credible contingency event - QLD region - 27/01/2024
Cancellation - Non-credible contingency event - QLD region - 27/01/2024
Refer AEMO Electricity Market Notice 113825
At 0138 hrs the Gin Gin (H6) No.2 275 kV Busbar tripped.
AEMO has received further information and now determines this was not a non-credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 27/01/2024
Non-credible contingency event - QLD region - 27/01/2024
At 0138 hrs the Gin Gin (H6) No.2 275 kV Busbar 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