‘Collector to Yass 3L’ network outage truncated, 3 weeks early

Worth a short note this evening to highlight the importance of the subject of Market Notice 117053 this afternoon:

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MARKET NOTICE
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From :              AEMO
To   :              NEMITWEB1
Creation Date :     18/06/2024     15:19:21

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Notice ID               :         117053
Notice Type ID          :         INTER-REGIONAL TRANSFER
Notice Type Description :         Inter-Regional Transfer limit variation
Issue Date              :         18/06/2024
External Reference      :         Inter-regional transfer limit variation – Collector Wind Farm to Yass 3L 330kV line – NSW region – 18/06/2024

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Reason :

AEMO ELECTRICITY MARKET NOTICE

Inter-regional transfer limit variation – Collector Wind Farm to Yass 3L 330kV line – NSW region – 18/06/2024

A planned outage of Collector Wind Farm to Yass 3L 330kV line in the NSW region was scheduled from 0600 hrs 03/04/2024 to 1500 hrs 08/07/2024.

The outage has been completed and Collector Wind Farm to Yass 3L 330kV line returned to service at 1515 hrs 18/06/2024

Constraint set revoked: N-CTYS_3L_WG_CLOSE

Manager NEM Real Time Operations

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END OF REPORT
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Given the importance of a set of 330kV lines connecting southern NSW into the Sydney area (which Allan wrote about here, for instance) we have an alert configured in the ‘Notifications’ widget in ez2view that triggered this afternoon as follows:

On the display:

1)  The alerts shown on the right also triggered an email let us know by email this afternoon that the invocation of the ‘N-CTYS_3L_WG_CLOSE’ constraint set had been revoked.

2)  The ‘Constraint Sets’ view on the left is filtered to just look at outage-related constraint sets pertaining to a group of 330kV lines (i.e. using the same filter that triggered the alert), with the Gantt chart just about to update to shorten the Gantt to the red line for ‘now’.

With low IRPM yesterday, and again this evening, and forecast again for the next couple days the 3-week earlier return to service of these lines would be a welcome boost to the tight supply-demand balance!

Quite fortuitous, given the numerous ‘forecast LOR2’ for NSW seen seen through today.