Systematic approach for the design of a fuzzy power system stabiliser

This paper presents a systematic approach for the design of a fuzzy logic controller (FLC) for the power system stabiliser (PSS) to enhancement power system stability. Conventionally, the design of a fuzzy power system stabiliser (FPSS) needs to adjust the FLC parameters by trial and error. One may also use searching algorithms such as genetic algorithms to find the FLC parameters but this is very time-consuming. The approach presented here is systematic and straightforward. It contains two stages. The first stage develops a proportional-derivative type PSS (PDPSS), and then in the second stage this PDPSS is transformed into the FPSS. Finally, several computer simulations of a multi-machine power system testify the feasibility of the proposed approach.