Application of fuzzy logic stabilisers in a multimachine power system environment

Application of fuzzy logic based power system stabilisers (FLPSS) in a multimachine environment is described. A five-machine power system representing two generation areas is used. The proposed FLPSS uses machine speed deviation and accelerating power as the inputs. The performance of the FLPSS when the system exhibits multimode oscillation phenomenon is illustrated. Simulation tests and results for different operating conditions and disturbances are discussed.