Korea Electric Power Corporation
Apparatus for managing voltage stability of electrical power grid and method therefor

Abstract:

The present invention relates to an apparatus for managing voltage stability of an electrical power grid and a method therefor. The apparatus includes: a fast response type voltage control unit generating reactive power output ratio information by using voltage information received from a plurality of target buses; a reactive power distribution unit generating reactive power reference information based on the reactive power output ratio information, and generating end voltage adjustment information by using the reactive power reference information; an end voltage adjustment unit adjusting an end voltage by using the end voltage adjustment information; a transient reduction control unit generating an auxiliary signal when a frequency is changed, and providing the auxiliary signal to the reactive power distribution unit; and a voltage adjustment control unit generating an additional auxiliary signal by measuring voltages of the target buses, and providing the additional auxiliary signal to the end voltage adjustment unit.