TUNING OF POWER SYSTEM STABILIZERS VIA IMC

Abstract

A new method for tuning the parameters of a conventional power system stabilizer (CPSS) using the internal model control (IMC) method is presented. It is shown that the controller designed by the IMC method for a power system model can be reduced to the CPSS form, and the performance of the IMC-based CPSS is related to two tuning parameters so on-line tuning is easy. Simulation studies on a single machine infinite bus (SMIB) system and a four-machine two-area system show that the IMC-based CPSS can achieve good performance in damping both the local modes and the intra-area modes.