In light of recent events, Dan Lee does some digging to find historical incidences of islandings and transmission tower failures.
Close to $31.5M of revenue was generated in the FCAS markets in SA over the seven days that the region was frequency separated from the rest of the NEM. This follow-on from Allan O’Neil’s earlier article investigates this final figure.
Yesterday’s note from ElectraNet prompted this initial summary of some of what we’ve seen happen with the SA islanding event over the last 12 days.
On Saturday evening 19th November 2022 the Heywood interconnector returned to service following temporary repairs to the tower damaged on Saturday 12th November.
With low wind production in South Australia on Thursday 17th November, limited import capability and curtailment of rooftop PV, the price has spiked on Thursday afternoon
Dan Lee takes a quick look at 5-second frequency data to show SA’s separation from the rest of the NEM and the ensuing frequency swings on late Saturday afternoon.
Fifth article for Monday 14th November 2022 … taking a quick initial look at the sequence of events immediately around the islanding in South Australia on Saturday 12th November 2022.
Third article for Sunday 13th November 2022 – this one taking a quick look at some pricing activity in the ENERGY market overnight.
Second article in a growing series about the islanding of South Australia from Saturday 12th November 2022.
An initial article with the islanding of the South Australian region on Saturday evening, 12th November 2022.
Zooming into the ~7 minute period during which the initial event occurred in TAS on Friday 14th October 2022.
A deeper look at the frequency data (our own, and also from some others) reveals a number of other interesting things about what happened on Tuesday 25th May 2021 in Queensland.
AEMO also published something else today which (whilst not as publicised as the ESOO) will be of keen interest to many stakeholders in South Australia…
Another islanding event separated the SA region from the rest of the NEM yesterday (Monday, 2nd of March). Allan O’Neil investigates what happened before the event and possible causes.
As time has permitted, I’ve invested some time to prepare this first stage of a review of what went on during the period from 31st Jan 2020 to 17th Feb 2020 – a period during which the South Australian region formed its own frequency island following the transmission line damage. A period we’ve called an ‘accelerated accidental experiment’.