Drop in NEM mainland frequency on Friday 18th October 2024 following trip of Loy Yang A2

Posted by Paul McArdleFriday 18th October 2024  2:23 PM   Topic: 2024-10-18

It’s been an ‘interesting’ couple of days in the NEM.

Adding to the mix is this frequency disruption just prior to 13:31 (NEM time) on Friday 18th October 2024:

2024-10-18-at-13-58-NEM-Mainland-Frequency

The minimum we can see in our records was down at 49.841Hz at 13:28:45.109 … so just outside the NOFB.

Coinciding with this drop, we saw this alert triggered by the ‘Notifications’ widget in ez2view looking at a range of different market conditions (including coal units coming offline):

2024-10-18-at-13-31-ez2view-Notification-LYA2-offline

This notes the trip of Loy Yang A unit 2 in the 5 minute period to 13:31.

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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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