andyd, computer resources were limited, being on a portable device while on the cruise
Family ducked down the street for 5 minutes...2 hours ago, so did some digging...the data is publicly available
http://www.nemweb.com.au/REPORTS/ARCHIVE/Dispatch_SCADA/ that's the dispatch data from the market operator.
reneweconomy have updated their article...
Quote:
Update: We just realised that a paragraph explaining the timings of the Tesla intervention went missing in the transfer from one document to another.
To be clear, on the timing of the response of this generators, some did some minor adjustments (1MW) as part of regulation FCAS, the moment they dropped below 50Hz.
Here's the facts...and I've only included a handfull of generators, the station within spitting distance of the units that tripped, and mine, 500 miles or therabouts away...
Quote:
Unit 02:00 02:05
LYA3 559MW 0MW (so yes, it was at full noise before tripping)
YW1 249MW 256MW
YW2 338MW 352MW
YW3 382MW 394MW (into reserve capacity margin...governor drives it, so no issues)
YW4 382MW 392MW (same as above)
MP1 414MW 460MW (can do 700, was turned down overnight at the time of the trip)
Rest of the connected generators all did similarly...that's how their governors respond to frequency in the short term, and the controls and firing in the longer.
So far from "only 1MW minor adjustments" claimed by the "napping" generators, all of whom did the heavy lifting to get the frequency back up.
AEMO try to keep a full two units worth of generation up their sleeve at any one time (N-2 contingency).
Grid wasn't at risk really.