Excitation Control of Generators for Stabilizing a Power System of Large Scale by the Model Reduction Method

Abstract

It is an important problem to keep dynamic stability of a power system of large scale. In this paper, a method stabilizing a power system of large scale is proposed by using a dynamic compensator for each generator to realize the cooperative excitation control system. The model reduction method of internally balanced type is extented such that it is applicable to unstable power systems. Using the proposed design algorithm with dynamic compensators, practical parameters of the dynamic compensator are determined and a decentralized excitation control system is designed. Also, it is suggested that pole placement for the dynamic compensators is solved by the homotopy method which is preferable to global convergence.