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Randy
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Posts: 2166
Joined: Thu Apr 22, 2010 12:29 pm
Delivery Date: 04 Jan 2011
Leaf Number: 0191
Location: San Diego, CA

Re: Texas, ERCOT, PUC and the severe winter storm

Sun Apr 04, 2021 1:00 pm

goldbrick wrote:
Mon Mar 29, 2021 7:32 pm
Thanks, interesting article. I'm not a power guy and I don't understand why the frequency of the grid would drop if it was over-loaded. The voltage - yes, that happens all the time - but I thought the frequency was always 60.0 no matter what. Maybe it's due to the fact that it was so very close to just failing completely. Pretty scary unless TX gets it's act together and updates its power systems.
Think of the frequency of the power system like a belt-driven table saw. When it is free running at a steady state, that equates to 60 Hz on a power system. When you shove a big piece of wood through the saw to cut it (similar to adding to the power system load), you can hear the motor on the table saw slow down (equivalent to power system lower frequency). When the wood passes through the saw, the speed of the saw goes back up to the original steady state speed.

If the frequency of the power system gets too low, starting at 1.5 Hz and up, steps are taken to get back to 60 Hz, including ramping up generation output, or even shedding electrical load, to keep the system stable or it could be in danger of collapse...

Hedge
Posts: 4
Joined: Mon Jul 25, 2011 9:55 am
Delivery Date: 25 Jul 2011

Re: Texas, ERCOT, PUC and the severe winter storm

Tue Apr 13, 2021 1:35 pm

On the $0.09tkwh all in. I use energy ogre to find me the best rates and pay around $0.08-$0.09 with all taxes and fees included. Although my house is quite large and uses about 1000 kWh more than the what to OP posted his isage is. The average also includes energy ogres $10 a month fee.

cwerdna
Posts: 11996
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Texas, ERCOT, PUC and the severe winter storm

Tue Apr 13, 2021 7:40 pm


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