Convective downdrafts and high-voltage transmission lines
In light of another transmission tower collapse caused by convective wind gusts, we’ve invited wind loading expert Dr John Holmes to explain this phenomena.
Eventful Days
Early observations from examining the AEMO’s four-second SCADA data from Tuesday afternoon
Allan O’Neil provides a couple of initial observations regarding Dundonnell Wind Farm and Loy Yang A from his first glance of at the 4-second SCADA data from the events in Victoria on Tuesday afternoon.
Weathering the Storm: Victoria’s Record-Breaking Energy Day
Perhaps unrealised by many, but Tuesday afternoon’s events in Victoria resulted in a new record low in terms of number of coal units being online in the region, Geoff Eldridge explores.
A major blackout left 500,000 Victorian homes without power – but it shows our energy system is resilient
Dr Roger Dargaville from the Monash Energy Institute argues that Tuesday’s events in Victoria were a showing of a system resilience, and not fragility.
[SLIGHTLY UPDATED] a sequence of events for what happened in Victoria through the day on Tuesday 13th February 2024 (via Timescale #1)
In this article we’ll have a first pass at what happened in Victoria on Tuesday 13th February 2024 at a DI-by-DI level … which we call ‘Timeline #1’ level – noting will go more granular later (Timeline #2) and less granular later (Timeline #3).
Part 2: Too much rooftop PV in SA, almost, as forecast for 15th February 2024
An an elevated risk of the contingent disconnection of Distributed PV resurfaces for SA on 15 February 2024 with market notice 114743.
Too much rooftop PV in SA, almost, as forecast for 15th February 2024
Market notice 114741 cancelled the notice of a high risk of curtailment of distributed PV in SA on 15 February 2024.
Loy Yang A4 commences return to service ~26 hours after trip on Tue 13th Feb 2024
The third (of 4) units at Loy Yang A that tripped on Wed 13th Feb 2024 is beginning to return to service ~26 hours afterwards.
Some *initial* headline questions following the transmission damage, unit trips & loss of load, initiated on Tuesday 13th February 2024
What happened yesterday (Tue 13th Feb 2024) in Victoria was a significant event in the history of the NEM – and the flow on effects will be felt for weeks and months (even years?). Here’s a starting list of questions we’d like to explore…
Another tower collapse poses more questions about transmission
The sixth transmission tower failure within the NEM in almost four years, has prompted further questions about the physical network and its resilience to severe convective winds.
High impact weather lashes Victoria, igniting fires and leaving 500,000 without power
Weatherzone meteorologist, Ben Domensino, reports on the extent of the severe weather conditions across Victoria yesterday.
Hiccup in return to service of Loy Yang A2
A follow up on the (bumpy) return to service for Loy Yang A2
Loy Yang A3 starts up, as the second (of 4) units to return to service
The start of a return to service for Loy Yang A3.
AEMO statement (at 20:30) about the 473,000 customers still off supply
AEMO reports (at 20:30) still 473,000 customers off supply.
544,000 lightning strikes around Melbourne on Tuesday 13th February 2024
Ben Domensino (from Weatherzone) provides useful information about the weather experienced in Victoria on Tuesday 13th February 2024
Still 470,000 customers without power in Victoria at 20:00 NEM time on Tuesday 13th February 2024
At 20:00 NEM time (21:00 in VIC) we see still ~470,000 customers without electricity supply.
Weird and wacky (erroneous?) transmission transfer limits for VIC1-NSW1 and Basslink on Tuesday 13th February 2024
A short article to record a question from a client that we did not have time to investigate further today.
Victoria’s Department of Energy reports *six* transmission towers down in Victoria
The Department of Energy* in Victoria confirms that six towers have been downed, on Tuesday 13th February 2024
Unit Trip at Callide B1 on Tuesday 13th February 2024
In amongst the frenetic challenges in Victoria today, the Callide B1 unit (in QLD) tripped … probably unrelated to the VIC activity.
Towers down near Geelong on 13th February 2024
A photo of downed transmission towers near Geelong, reported in ABC News’ blog, was observed on 13 February 2024.