Following up on the trip of two Eraring units on Wednesday 3 April 2024.
Global-Roam systems, configured to detect a start up of selected dispatchable units, alerted us that:
- ER02 switched on to have an interval-starting level of 6 MW for dispatch interval interval 2024-04-03 20:35, and later
- ER01 switched on to have an interval-starting level of 7 MW for dispatch interval 2024-04-03 23:10 (approximately 2.5 hours later)
Further inspection via ez2view with next-day bids helped us understand that:
- Both units initially offered available capacity of 66 MW.
- ER02 subsequently increased it’s availability to 210 MW for the 23:00 interval.
Market Notice 115947, advising of the return to service of both units, was issued at 23:16 in evening on the Wednesday:
115947 POWER SYSTEM EVENTS 03/04/2024 11:16:35 PM Update - Non-credible contingency event - NSW region - 03/04/2024 AEMO ELECTRICITY MARKET NOTICE. Update - Non-credible contingency event - NSW region - 03/04/2024 Refer AEMO Electricity Market Notice 115944 At 2301 hrs the Eraring Power Station Unit 1 and Unit 2 were returned to service. The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances. AEMO will not reclassify this event as a credible contingency event. Manager NEM Real Time Operations
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