A very short article for Wednesday 6th November 2024, such that we might follow up later, to note the following two wobbles in frequency in the mainland NEM today …
Frequency wobble on Wednesday morning
Here’s one that is visible in the snapshot taken at 09:18 (NEM time) this morning, looking back a 1-hour window:
Deeper Frequency wobble on Wednesday afternoon
And here’s a snapshot taken at 16:02 (NEM time) this afternoon, looking back a 2 hour window and capturing a dip that occurred
Not quite (according to what’s visible in the chart) to the edges of the Normal Operating Frequency Band (NOFB).
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.
The multi-region islanding event on Saturday 25th August was a very rare event – perhaps the only one’s that occurred in the history of the NEM. It has generated plenty of questions – and driven our analysis further. We share some more observations here, and keenly await the draft AEMO report.
A short article to flag a two rapid (and noticeable) fluctuations in Mainland Frequency that we spotted this afternoon/evening on Tuesday 29th October 2024.
Friday 31st January 2025 (appeared to) experienced a very large drop in demand in NSW in a single dispatch interval – but we’re now suspecting some form of data/operational glitch. However we wonder, if there was ~1,000MW more energy injected into the grid than required over a sustained period, what stopped the frequency flying through the roof?
1 Commenton "Mainland frequency wobbles, on Wednesday 6th November 2024"
Does a slight drop in frequency affect synchronise clocks and is the effect cumulative?