Voltage recovery at the thyristor module of a generator cutout

摘要

The voltage recovery accompanying short-circuit and asynchronous switching at the generator terminals is considered. In establishing the requirements on the thyristor and safety circuits, the inverse current in the thyristors must be modeled. Taking account of the inverse current in the thyristors leads, in the absence of safety circuits, to significant (by a factor of 1.8-2.5) increase in the first maximum of the transient recovering voltage in comparison with the case where the cutout is an ideal switch.