A Self-tuning Power System Stabilizer

Abstract A self-tuning power system stabilizer using a recursive least-squares identification algorithm with varying forgetting factor and self-searching pole-shift control algorithm has been developed. Application of this controller to a multi-input multi-output system for a generating unit-field excitation and governor control, and in the form of a dual-rate control strategy to further improve the properties of the stabilizer for fast acting systems, is described in this paper. Results of studies demonstrate the effectiveness of the proposed controller.