Stabilization for Multi-Machine Power System by Decentralized Generator Control Strategy Using H∞ Control Theory

Abstract

Many studies have been investigated about the generator controller which aims at coordinated control of AVR and Governor with multivariable control scheme. The most of these studies cnsidered one-machine infinite-bus model system and calculated the effect of controller. So there are few papers to deal with the interaction among the generators in multi-machine power system.
This paper presents a novel control scheme for decentralized generator controller in multi-machine power system. We consider the interaction among the generators as the equivalent disturbance from the external system. In this sence, the proposed cntrol scheme can be realized for the noninteractive generator control in multi-machine power system. The simulations by the three-machine loop system and five-machine radial system demonstrate the effectiveness of this control scheme.