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Update - Lightning vulnerable lines in Vic region
Update - Lightning vulnerable lines in Vic region
Refer to AEMO Electricity Market Notice 119029
At 1525 hrs on 18/10/2024 the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line tripped and auto-reclosed.
The cause of the trip was identified as due to Lightning.
In accordance with SO_OP_3715, AEMO now considers the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line to be vulnerable with a category of probable due to Lightning.
Manager NEM Real Time Operations
Update - Pre dispatch demand forecast - Qld region
Update - Pre dispatch demand forecast - Qld region
Refer market notice: 119666
The issue relating to the Queensland Pre dispatch demand forecast has been resolved.
Manager NEM Real Time Operations
Pre dispatch demand forecast - Qld region
Pre dispatch demand forecast - Qld region
AEMO is aware of an error in the Queensland pre dispatch demand forecast.
AEMO is currently working to resolve the issue.
Dispatch results are not impacted.
Manager NEM Real Time Operations
Non-credible contingency event - VIC region - 18/10/2024
Non-credible contingency event - VIC region - 18/10/2024
At 1525 hrs the Rowville - Yallourn No. 7 220 kV Line and the Rowville - Yallourn No. 8 220 kV Line tripped and auto-reclosed.
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
Network Augmentation Commissioned - NSW Region - 18/10/2024
A network augmentation has been commissioned in the NSW region at 2000 hrs 18/10/2024 as follows:
Stubo 330kV switching station has been cut into the existing Wellington - Wollar West 79 330 kV line to form the following circuits:
Wellington - Stubo SF 79 330 kV Transmission Line
Wollar West - Stubo SF 7M 330 kV Transmission Line
Manager NEM Real Time Operations
Cancellation of Actual (LOR1) condition in the QLD region - 17/10/2024
Cancellation of Actual (LOR1) condition in the QLD region - 17/10/2024
The Actual LOR1 Condition in the QLD Region advised in AEMO Electricity Market Notice No.118993 is cancelled at 1839 hrs 17/10/2024.
Manager NEM Real Time Operations
Actual Lack Of Reserve Level 1 (LOR1) in the QLD region - 17/10/2024
Actual Lack Of Reserve Level 1 (LOR1) in the QLD region - 17/10/2024
An Actual LOR1 condition has been declared under clause 4.8.4(b) of the National Electricity Rules for the QLD region from 1800 hrs.
The Actual LOR1 condition is forecast to exist until 1900 hrs
The capacity reserve requirement is 1136 MW
The minimum capacity reserve available is 1076 MW
Manager NEM Real Time Operations
Heywood testing (Vic to SA) 16th October 2024 - update
Refer to market notice 118930 - revised the testing times.
There is an opportunity for testing Heywood Interconnector (HIC) flow from Victoria to South Australia above 450MW on 16th October from 17:00hrs to 17th October 00:00hrs
This test includes a trip and reclose of a line in South Australia.
Please also refer to the published formal PEC Stage 1 and HIC capacity release testing information at the following link https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/project-energyconnect-stage-1-and-hic-capacity-release/pec-stage-1-and-hic---final-test-program.pdf?la=en.
Ben Blake
AEMO Operations
Heywood testing (Vic to SA) 16th October 2024
There is an opportunity for testing Heywood Interconnector (HIC) flow from Victoria to South Australia above 450MW on 16th October from 17:00hrs to 20:00hrs
This test includes a trip and reclose of a line in South Australia.
Please also refer to the published formal PEC Stage 1 and HIC capacity release testing information at the following link https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/project-energyconnect-stage-1-and-hic-capacity-release/pec-stage-1-and-hic---final-test-program.pdf?la=en.
Ben Blake
AEMO Operations