10-06-2016, 09:31 AM
(10-06-2016, 06:55 AM)Achebe Wrote:After a bit of research and viewing excerpts from the interim report, it appears @Achebe is essentially correct: two major wind farm transmission lines, which were otherwise functional, went out of sync within a minute, taking them offline and overloading the interconnecter as it tried to bring in enough power to run the whole state. So... with the proviso that the problem was phase and frequency rather than overwattage, the cause-and-effect are, ahem, close enough for poetry. FWIW, a gas-fired plant was used to reboot the SA grid and ten wind farms have been ordered to stay offline due to misbehavior during the incident. (Also because of distortions in pricing, but that's another large ball of wax.)(10-06-2016, 06:49 AM)Leanne Wrote: Having a little trouble critiquing this merely because -- as I'm sure you know -- it's bugger-all to do with the wind turbines and all to do with a once-in-a-century storm beating the crap out of power lines. Storms would have just as little regard for fossil fuel-generated electricity, regardless of which agency Barnaby Joyce is cuddled up to at the moment.The thing is, at high wind speeds the turbines run faster, which leads to higher frequency, which leads to grid collapse. Can be dealt with by disconnecting the power source but in SA's case half of their electricity comes from wind so when they did that and drew more power from the interconnecter with Victoria, it overloaded thr IC and caused it to trip. With generation in SA so low from other sources, the grid frequency crashed and caused the blackout.
I am not sure about the volta on the recurrence of "teens". The connotation shifts but I am not convinced the shift is strong enough to support the turn, particularly as they're both resting on similes (the weaker, more needy cousin of the metaphor family). I won't speak to the misuse of "hurricanes" simply because this need not stand for the single event but may well translate into other situations. Well, that is if WA and Qld ever get over their affair with coal, since they're the states most likely to be subject to actual hurricanes.
I do like the rhymes here, especially use/juice, and the couplet is pretty cool.
AEMO will look into it and release all the racy details I'm sure.
The solution is a new interconnect or with NSW...
But...duke is a coal lover, 'tis a kniwn fact. Tsk tsk.
Thanks to both, particularly @Leanne for the advice on repetition and other weaknesses. Perhaps I can work the idea of excessive frequency into the edits... teenagers going at it like rabbits? Perhaps best not.
