Market Notice 121008: Three of four Uranquinty units trip during LOR1 condition
At 16:55 on 26th November 2024 AEMO advised three of four units at Uranquinty tripped, during a forecast LOR1 condition which then became an actual LOR1 condition.
generator trip
Tarong North Power Station trips on Monday evening 19th August 2024
A quick contemporaneous record of the trip of the Tarong North Power station unit on Monday evening 19th August 2024.
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?
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.
Two units at Tarong come offline Wednesday morning 28th Feb 2024 … not planned in advance
TARONG#1 has come offline from close to minimum load this morning, closely followed by TARONG#2 (also from close to minimum load) – Wednesday 28th February 2024
How fast is a trip?
Curiosity (part triggered by some conversations I noticed on social media) drove me to have a look at the implied ROCDOWN in the AEMO 4-second data for the 5 facilities (10 DUIDs) involved in rapid ramp down on Tuesday 13th February 2024.
Grid frequency on 13th February 2024
Grid frequency had dropped to 49.689 Hz. We take an initial look into the timeseries of grid frequency recorded on the day.
Victorian power system event 13 Feb 2024 13:08 – a few quick notes
Guest author, Allan O’Neil, adds some insights in a rapidly evolving situation on Tuesday afternoon 13th February 2024 in Victoria.
4 Loy Yang A units simultaneously trip, on Tuesday 13th February 2024
An unfolding story, on Tuesday afternoon 13th Feb 2024 – with all 4 x Loy Yang A units tripping.
… but Loy Yang A1 trips on Sunday 14th January 2024
A quick PS to the earlier Sunday article (which looked at LYA4) this time focused on LYA1.
Hiccups continue, at Loy Yang A4 (Part 2)
Following the 4th successive trip/outage at Loy Yang A4 in recent days – and updating Tuesday’s earlier article.
Hiccups at Loy Yang A4 (Part 1)
A quick look at 3 successive trips at Loy Yang A4 in returning back from a recent forced outage.
Industrial Action at Kogan Creek Power station part 3 – appears unrelated to Tuesday’s trip, and then lower load into Wednesday
Yesterday (Tue 26th Sept 2023) we saw Kogan Creek drop offline for a few hours – and were asked if this was related to industrial action. Here, with the benefit of ‘next day public’ data, we take a first look.
The 2023 ESOO report shows coal unit EFOR is still a significant factor
One observation about the 2023 ESOO is that EFOR (equivalent forced outage rate) for coal and large gas units is a large and growing challenge.
Four coal unit outages in the past 24 hours
It does not happen often, so when receiving 4 different ‘coal unit off’ alerts within 24 hours, we thought we would take a look …
Kogan Creek returned to service on Tuesday 20th December 2022
CS Energy’s Kogan Creek restarted on the morning of Tuesday 20th December 2022.