When there is a sudden loss in the demand what happens to the transformer and generation?

When there is a sudden loss in the demand what happens to the transformer and generation?
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1 Answer

Answer :

When there is a sudden loss of load The Generator terminal voltage increases due to the fact that the IX drop in the generator winding decreases. The EMF generated being the same the reduced reactance loss leads to a sudden rise in generator voltage. But the AVR (Automatic Voltage Regulator) will act instantly to bring this voltage to the set value by reducing the excitation. There is practically no effect of this on the transformer barring the reduction in I2R (copper Losses) and reduced IX drop.
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