Waffledynamics said:
AgLA06 said:
I believe this was the one hit by Ukraine and the videos showed the fire. Belogord is in range and Ukraine has been hitting strategic targets all week.
That would cause a power overload? Can you or someone else "explain like I'm 5"?
Did the Ukes take out a generator before the grid went down? If you have a grid powered by several generators and you take one out, then the other generators have to pick up the load. The problem is that turbines/generators possess large rotational inertia/mass and cannot respond quickly to the sudden increase in their share of the electrical generation load. The operators of the working generators might have to take their unit offline to save it from the damage that the sudden extra loading would cause, which dumps additional load on the still operating units. You would then have a cascade effect where all the unit generators have to be taken offline to save them. The grid would then have to be restarted by ramping the power up slowly to full load distributed over all the units.
TLDR - if you take one unit out of the grid suddenly then it can cause a complete brownout of the whole grid.
This is from a 40yo memory of what causes a brownout as explained by a utility plant operator, so please don't flame me too harshly if some of the tech details are a bit rough.
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