Updated long-range trend of aggregate wind production statistics
An accompanying article, to update this trend of long-range production statistics for all wind farms (aggregated) across the NEM.
NEM-wide wind lull stretches extends to a full week (Tue 16th April 2024), and has another week to go!
A quick look at a period of low wind harvest across the NEM in April 2024 that’s already stretched ~7 days and looks like it might have more days to come …
Tasmania’s grid frequency on Friday 12 April 2024
Three data points points help to highlight the change in grid frequency in Tasmania on 12 April 2024.
Low wind production on Monday morning 15th April 2024
A short article to record low wind, particularly in SA and VIC on Monday morning 15th April 2024 – hence elevated prices.
The Australian notes how Callide C was back in court again this week
Another update from the Australian during the week with respect to the Federal Court proceedings with respect to Callide C (particularly unit C4).
Trip of 550MW of industrial load in Tasmania on Friday 12th April 2024
A belated article recording how (on Friday 12th April at 10:48) the Sheffield – Farrell No.2 220 kV line tripped during restoration due to fault on the line, disconnecting ~550MW of major industrial load in Tasmania.
An update on Callide C3 (back online) and Callide C4 (still offline)
A few separate questions about Callide C3 and C4 in recent days prompts this short status update on both units.
Network outage (currently underway) on Murraylink DC interconnector
Whilst thinking about interconnectors, there’s an outage currently underway on Murraylink.
Increase in NSW to QLD transfer limit on QNI to 850MW
AEMO note that (from 10:00 on Wed 10th April 2024) the QNI export limit will increase to a possible 850MW … we take a quick look at history.
Optimising a highly renewable NEM from scratch, Part 2
In Part 2 of their modelling and analysis project, David Leitch and Paul Bandarian discuss the modelled results of their sharpe ratio-maximised VRE system, including additional considerations regarding transmission.
What was the cause of the coincident trip of Eraring units 1 and 2?
It’s Monday 8th April, the two Eraring units that tripped last week are back online – and I wonder what the cause of the coincident trip was?
Supply-side responses following the trip of two Eraring units on Wednesday 3 April 2024
An inspection of bids and dispatch outcomes indicates some units helped compensate for the loss of supply with the trip of ER01 and ER02.
Eraring Units Back
The two Eraring units that had tripped on Wednesday 3 April 2024 were returned to service by 11pm that evening.
Fast frequency recovery, on Wednesday 3rd April 2024
Fourth article on Wed 3rd April 2024, pertaining to the earlier coincident trip of ER01 and ER02 units at Eraring Power Station.
AEMO Market Notice 115944 about trip of ER01 and ER02
AEMO Market Notice 115944 notifies that the coincident trip of ER01 and ER02 was at 13:22 NEM time on Wednesday 3rd April 2024.
Replaying four dispatch intervals on Wed 3rd April 2024 with the ER01 and ER02 trip (Part 2)
In this second short article for the day, we Time-Travel ez2view back to 4 x Dispatch Intervals surrounding the coincident trip of ER01 and ER02 at Eraring Power Station.
Simultaneous trip of ER01 and ER02 drops mainland frequency in the NEM
A first article noting simultaneous trip of Eraring units 1 and 2 on Wednesday afternoon 3rd April 2024.
Focusing on VIC exports (and imports) with the ‘Major Power System Event’ on Tuesday 13th February 2024
In this article we look again at Tuesday 13th February 2024 (Victoria’s ‘Major Power System Event’) and sum up the impact of the event on net exports from Victoria over a 14-hour period, but particularly around ~13:08 when the towers were downed.
Callide C3 starts up, after 518 days offline – on 1st April 2024 (no, that’s *not* an April fools tall tale)
It’s Monday afternoon 1st April 2024 and Callide C3 has begun its journey back online following an outage longer than 500 days since the cooling tower failure in October 2022.
Recapping aggregate solar yield in Queensland’s ‘wet week’ prior to Easter 2024
A quick look back at the period before easter 2024, which was forecast to be a wet week in QLD … looking particularly at solar yield.