Re:A molten salt storage solution using sodium hydroxide
by ggm on Thursday December 09, 2021 @06:03PM
(#29504291)
That's good. Condensers and like appeal to my steampunk sensibility but they aren't magic or instant. If batteries can do reactive quickly and as well as they do FCAS then it's a huge plus. Getting more than 6 hours is a good point too. I'm sure battery tech is going to include scaling to meet that, this kind of heat storage might just be about time to market.
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Re:A molten salt storage solution using sodium hydroxide
by namibj on Friday December 10, 2021 @01:31AM
(#29507023)
Inverters are far better than anything rotating-mass-based for control over waveform. At least if you want to, that is. You just take a (possibly GPS-disciplined) quartz oscillator and have no issues hitting 50ppm frequency stability at lower phase noise than can get through the system at 50/60Hz.
They can essentially do this instantly, i.e., substantially sub-wavelength of your line frequency (a PWM of 10 kHz isn't even high for an inverter, and 100 kHz is well within what's feasible for large systems operating at a couple hundred volts; 10 kHz would equate a light-speed delay of 30km, 100 kHz of just 3km, which gets into the territory of relativistic w.r.t. medium voltage rings in cities).