VOLTAGE FLUCTUATION SUPPRESSION DEVICE AND VOLTAGE FLUCTUATION SUPPRESSION METHOD

摘要

PROBLEM TO BE SOLVED: To accelerate a response to a voltage fluctuation even when a variable control reactor is used as a reactive power generator of a voltage fluctuation suppression device.SOLUTION: The voltage fluctuation suppression device, suppressing a voltage fluctuation of an AC system by outputting reactive power, feeds back a DC detection value of a DC winding of a variable control reactor to a reactive power command value based on a voltage effective value of the AC system and controls a DC power voltage to generate reactive power and output the reactive power to the AC system.