RESONANCE SUPPRESSION DEVICE

摘要

The purpose of the present invention is to suppress resonance even when a resonance point is varied, particularly to suppress resonance even when the number of wind power generators connected to a power system is varied in a wind power plant equipped with a plurality of wind power generators. A resonance suppression device for suppressing resonance generated by an electric power apparatus (wind power generator) equipped with a harmonic filter connected to a power system, the resonance suppression device comprises: an inverter for supplying the power system with AC current in parallel with the electric power apparatus; a current command value generation unit having the voltage of a junction between the electric power apparatus and the power system input thereinto, and generating a current command value for moving the resonant frequency of the harmonic filter toward higher frequencies; and a current control unit for controlling the AC current output from the inverter on the basis of the current command value.