About the unplanned outage of Lower Tumut – Yass 330 kV 03 Line on Wednesday 15th January 2025 … Part 2
Second sequential part of a broader review of some earlier-than-expected volatility in NSW on Wednesday afternoon 15th January 2025.
network outage
Planned network outage on Line 17 (Avon to Macarthur) commences on Wednesday morning 18th December 2024, as per the (deferred) plan
A short note to highlight that the alerting in ez2view has flagged that the (deferred) network outage (in the ‘N-X_AVMA_KCTX’ constraint set) commenced Wednesday morning 18th December 2024.
Delivering oscillations, whilst seeking to minimise oscillations? A Case Study (Part 1?) of Darlington Point Solar Farm on Thursday 29th August 2024
A case study, drawing heavily on various widgets in ez2view, looking at some large (and unexpected) oscillations in output at Darlington Point Solar Farm through a ~2 hour period on Thursday 29th August 2024.
Many localised network outages across Tasmania, on Sunday 1st September 2024
With the Severe Weather persisting in Tasmania into Sunday 1st September 2024, reports suggest ~5% of the population without power due to many localized network outages.
AEMO directs load shedding (following unplanned network outages) in NSW on Monday evening 8th July 2024
A short (perhaps initial) record of load shedding instructed for NSW on Monday evening 8th July 2024.
Tomorrow’s brief network outage (on the Rowville – South Morang 500 kV line) *might* have high impact
A short note about the (possibly high impact) short outage planned tomorrow on the Rowville – South Morang 500 kV line in VIC (re the ‘V-ROSM’ constraint set)
The ‘N::N_CTYS_2’ constraint equation will be invoked for another 11 days … out till Friday 7th June 2024
The AEMO has extended the scheduled invocation of the ‘N-CTYS_3L_WG_CLOSE’ constraint set (which contains the ‘N::N_CTYS_2’ constraint equation – one factor in the outcomes on Wed 8th May 2024).
Murraylink back in service, from Friday 19th April 2024
Murraylink had been offline on an outage, but returned to service on Friday 19th April 2024
Network outage (currently underway) on Murraylink DC interconnector
Whilst thinking about interconnectors, there’s an outage currently underway on Murraylink.
Thunderstorms in South Australia impact ~30,000 electricity customers on Tuesday 28th November 2023
Thunderstorms impacted parts of South Australia electricity system in the early hours of Tuesday morning, with two syncons tripping and around 30,000 customers experiencing outages.
Stock up on candles?
Last Thursday (31st Aug 2023) the AEMO published the ESOO 2023, including forecasts of some possibility of unserved energy in Victoria and South Australia this coming summer 2023-24 (above the Interim Reliability Measure). Guest author Allan O’Neil takes a look.
The 2023 ESOO report clarifies why the transmission model only includes ‘System Normal’ – and why it’s a simplification
One observation about the 2023 ESOO is that AEMO is has highlighted the set of constraints modelled is only ‘System Normal’.
Price volatility in SA on Sunday afternoon 13th August 2023
Continuing network outage, and weather conditions, leads to long duration of elevated price in SA over the weekend.
South Australia islanded (and ~80,000 without power), on Saturday 12th November 2022 (and until Friday 18th Nov 2022)
An initial article with the islanding of the South Australian region on Saturday evening, 12th November 2022.
Evening price volatility on Tuesday 7th June 2022
A quick look at the start of price volatility on Tuesday evening, 7th June 2022
Morning dose of volatility in QLD – Tuesday 7th June 2022
A quick look at some of the factors of this morning’s price volatility in the QLD region.
Morning price spike in South Australia on Monday 6th June 2022
A quick look at a price spike at 06:45 on Monday morning 6th June … that has some parallels to yesterday evening.
Transmission outage on ‘Ravine to Yass (2) 330kV line’ still ongoing
The ‘N-RVYS_2’ Constraint Set continues, with delays in the outage compared with expectations last week.
Power system stress – with record demand and insufficient supply in New Zealand on Monday 9th August 2021
Following a tight supply-demand balance in New Zealand on a winter Monday evening 9th August 2021, leading to unserved energy, here’s a quick review of what information I could find.
Spot price up in QLD and NSW, with only 1,532MW of spare capacity Monday evening 12th July
A snapshot of the start of price volatility in QLD and NSW on Monday 12th July 2021.