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by opwieurposiu 2178 days ago
The flywheel will have breakers to prevent excessive inflow or outflow of power.

In a conventional plant, the spinning machinery is monitored by vibration sensors. If the vibration exceeds some threshold, a "Turbine Trip" occurs and the offending generator is disconnected from the grid. It then slowly spins down, dissipating energy via it's own friction.

https://en.wikipedia.org/wiki/Turbine_trip