I understand about the frequency balance with supply and demand but I’m still pretty sure the protection trips for the large spinning generators is related to the need to protect against grid frequencies changing quickly.
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That’s not what I meant.
A generator station consist of a very large spinning machine, often more than one. The rate of spin sets the frequency and the generator is synced to the grid. If the grid changes frequency it drags the generator with it; a sudden change in frequency can cause damage1/2
2/2 to the machinery as it experiences rapid changes in torque. Generators monitor grid frequency and if it changes rapidly will usually disconnect to prevent damage. Inverter-based systems don’t have this issue.
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For that system to decide to reduce the input energy, there must be a very high frequency shift.
That's not a normal demand/supply balance situation.
A generator station consist of a very large spinning machine, often more than one. The rate of spin sets the frequency and the generator is synced to the grid. If the grid changes frequency it drags the generator with it; a sudden change in frequency can cause damage1/2
At that point inverters would also have problems.
Having those there to would help with keeping the grid up.