Stabilization of Power System Frequency Fluctuations by using a Control System with Dead Band in Adjustable-Speed Pumped-Storage Generator

Abstract

This paper proposes a new control system for Adjustable-Speed Pumped-Storage Generator (ASG) to decrease frequency fluctuations of power system with a large amount of wind farm introduced. When a large amount of wind power generation is connected to the power system, it can decrease power quality, e. g., frequency variations. There are some methods to suppress the frequency fluctuation in the power system, among which ASG can be an effective countermeasure. However, there has not been sufficient report on the frequency control by using ASG. This paper proposes a new output control system with dead band for ASG to smooth frequency fluctuations of the power system arisen from fluctuating output of the wind farm.