Would a nuclear or fossil fuel turbine power plant just tear itself apart if disconnected from load at speed? I vaguely understand that the load provides a sort of magnetic resistance on the spinning generator. Without load they would they spin too fast? Or is it a matter of there not being any easy way to dump the power by doing something useless with it like just melting sand or smth?
Fossil plants, not really. The hard part for them is getting them started again which can take hours. But disconnecting them suddenly won’t hurt them. There are many layers of protective devices keeping them from overspeed events.
Nuclear plants are similar but they will continue generating heat long after they are disconnected from the grid and you have to have a plan for removing that heat or bad things will happen. This was what caused problems at Fukushima.
Would a nuclear or fossil fuel turbine power plant just tear itself apart if disconnected from load at speed? I vaguely understand that the load provides a sort of magnetic resistance on the spinning generator. Without load they would they spin too fast? Or is it a matter of there not being any easy way to dump the power by doing something useless with it like just melting sand or smth?
Fossil plants, not really. The hard part for them is getting them started again which can take hours. But disconnecting them suddenly won’t hurt them. There are many layers of protective devices keeping them from overspeed events.
Nuclear plants are similar but they will continue generating heat long after they are disconnected from the grid and you have to have a plan for removing that heat or bad things will happen. This was what caused problems at Fukushima.