Fuzzy Logic based Power System Stabilizer to improve Small-Signal Stability of Power System

摘要

Power System Stabilizers are used to improve small-signal stability of power system. A conventional lead-lag based power system stabilizer does not give satisfactory performance under continuously variable conditions. In this paper Fuzzy Power System Stabilizer is proposed to improve small-signal stability of the Single Machine Infinite Bus system. The effect of excitation system, Automatic Voltage Regulators on small-signal stability is also studied. Fuzzy Power System Stabilizer is tested under various disturbance conditions. Simulation results reveal that Fuzzy Power System Stabilizer give better performance than conventional power system stabilizer.