Guest author, Allan O’Neil, contributed this ‘Down 55% – but not out’ article that covered a number of different aspects of what went on on this eventful evening … both top-down and bottom-up.
Part 5
Friday 19th March 2021
AEMO published their preliminary report.
Part 6
(more to come?)
Perhaps there will be more, as there are still a few questions we are puzzled about….
One of three founders of Global-Roam back in 2000, Paul has been CEO of the company since that time.
As an author on WattClarity, Paul's focus has been to help make the electricity market more understandable.
Guest author, Allan O’Neil, takes a look at the AEMO’s 2020 ESOO to unpick the reason for the differences in outlook (and the sensationalised news headlines) compared to 2019 ESOO.
It’s taken a while to find the time – but today I’m posting this next analytical piece (Part 3) that seeks to understand what happened on Sunday 24th January 2021 with the NEM-wide SCADA Failure, which contributed to the price spike that occurred in QLD by virtue of what it did to the ‘Q>>NIL_CLWU_RGLC’ constraint equation.
Both the QNI and the Heywood interconnectors tripped around the same time on Saturday 25th August 2018 (not apparent at this time which one was first, and why), leading to both QLD and SA regions being separately islanded from the rest of the mainland NEM. This also contributed to over 1,000MW of load shedding in NSW and VIC, and presumably some frequency excursions in QLD and SA.
1 Commenton "AEMO publishes Preliminary Incident Report about incident on Friday 12th March in South Australia"
I see a seismic shift is underway-
https://www.msn.com/en-au/news/australia/seismic-shift-underway-of-electricity-grid/ar-BB1eUQK3