Sunday evening trip at Callide C4, and wobbles coming back online

Yesterday evening (Sunday 9th November 2025 at 21:26 NEM time) our ez2view ‘Notification’ widget triggered an alert for what appears to be Callide C4 tripping from close to full load:

2025-11-09-at-19-26-ez2view-Notifications-CPP4-trip

 

Frequency wobbles with the unit trip

So this morning I’ve extracted a 4-hour time-range of our frequency monitor (at 0.1 second cadence) to present the following:

2025-11-09-Frequency-4Hours

Interestingly, this shows two dips within short proximity to each other in time.  So we zoom in for a better look:

2025-11-09-Frequency-30mins

I’m presuming that the first drop is the one that the trip at CPP_4 triggered.  If that’s the case, not sure what the second wobble was related to?

 

 

A bounce on the way back online

Overnight from that point, our ez2view ‘Notification’ widget triggered more ON/OFF alerts for CPP_4 as it appears the unit had some false starts at getting back online.  I thought the ‘Bids & Offers’ widget in ez2view might provide a summary that is useful for some readers:

2025-11-10-at-09-20-ez2view-BidsOffers-CPP4

 

Nothing further, at this point.


About the Author

Paul McArdle
Paul was one of the founders of Global-Roam in February 2000. He is currently the CEO of the company and the principal author of WattClarity. Writing for WattClarity has become a natural extension of his work in understanding the electricity market, enabling him to lead the team in developing better software for clients. Before co-founding the company, Paul worked as a Mechanical Engineer for the Queensland Electricity Commission in the early 1990s. He also gained international experience in Japan, the United States, Canada, the UK, and Argentina as part of his ES Cornwall Memorial Scholarship.

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