5 ms·
The grid has basically zero capability to change the voltage; frequency is all that matters. Frequency is so low that in the past hour any power line time base
by JimNasby 6y ago
The grid has basically zero capability to change the voltage; frequency is all that matters. Frequency is so low that in the past hour any power line time base has fallen over 5.5 seconds behind. That’s a massive drop in frequency.
- Scoundreller 6y agoIt's a tool where I am. The grid operator does tests for 3% and 5% reductions: https://www.ieso.ca/Corporate-IESO/Media/News-Releases/2019/07/IESO-to-Conduct-Routine-Voltage-Reduction-Test https://www.ieso.ca/Corporate-IESO/Media/News-Releases/2019/... Would be very effective with the space-heater (or oven?) driven demand right now in Texas. Not effective for A/C-driven demand (motors will draw more current).
- Animats 6y agoNo, voltage can be dropped a bit. "Brownouts" are a thing. But they're less effective than they used to be, because everything with a switching power supply will draw more current if the input voltage drops. That's now a big fraction of the load.
- LeoPanthera 6y agoSurely it’s not a big fraction of the load tonight. This whole problem is being caused by heaters.
- puetzk 6y agoBut heaters on thermostats will just run more if they are putting out less wattage. So across your whole population of houses, you won't move that part of demand much (maybe a few were already running at 100% duty cycle).
- DavidPeiffer 6y ago>Frequency is so low that in the past hour any power line time base has fallen over 5.5 seconds behind. That’s a massive drop in frequency. Out of curiosity, where did you find this?