Also in the news, worth noting that at 17:44 yesterday (Monday 23rd June 2025) the AEMO issued MN127743 as follows:
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MARKET NOTICE
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From : AEMO
To : NEMITWEB1
Creation Date : 23/06/2025 17:44:44
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Notice ID : 127743
Notice Type ID : INTER-REGIONAL TRANSFER
Notice Type Description : Inter-Regional Transfer limit variation
Issue Date : 23/06/2025
External Reference : Inter-regional transfer limit variation – Darlington Point – Wagga No.63 330 kV line – NSW region – 23/06/2025
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Reason :
AEMO ELECTRICITY MARKET NOTICE
Inter-regional transfer limit variation – Darlington Point – Wagga No.63 330 kV line – NSW region – 23/06/2025
At 1719 hrs 23/06/2025 there was an unplanned outage of Darlington Point – Wagga No.63 330 kV line. The Darlington Point – Balranald No. X5 220 kV line consequently tripped due to a control scheme for the trip of the above line as per design.
The following constraint set(s) invoked at 1725 hrs 23/06/2025
N-DPWG_63_X5
This constraint set(s) contains equations with the following interconnectors on the LHS.
VIC1-NSW1,N-Q-MNSP1,NSW1-QLD1,V-S-MNSP1,V-SA
Refer to the AEMO Network Outage Scheduler for further information.
Manager NEM Real Time Operations
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END OF REPORT
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We’ve seen the ‘N-DPWG_63_X5’ constraint set beforehand.
We’ll come back to this later – but, for now, here’s a snapshot of two widgets in ez2view at the 16:10 dispatch interval (NEM time) on Tuesday 24th June 2025 that shows the network outage still underway, but soon to be completed:
Note in the list of (many!) constraint equations in this set that there are quite a number that speak of ‘zero inverters’ required to be in service at various Semi-Scheduled plant in the location of the affected network.
More on this (time permitting) in a subsequent article…
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