Optimal Decentralized Excitation Control to Improve Power System Dynamics

Abstract

This paper presents an optimal control design for decentralized generator excitation control systems which is suitable for use in power system to damped the oscillation depending on the modern control theory of controllable system by using generator load angle and voltage magnitude behind the quadrature axis transient reactance of generator to represent the interactions among generators, decentralized generator excitation control in multi machine power system can be achieved. Simulation results show that the proposed control improves power system dynamics.