Application of CDCARLA Technique in Designing Takagi-Sugeno Fuzzy Logic Power System Stabilizer (PSS)

One of the effective methods for damping oscillation due to occurring disturbances in power systems and keeping synchronism of machine is using power systems stabilizers (PSS) in excitation circuits of synchronous generators. In past decades, designing and tuning of PSS have been interested for many researches and scientist, because inaccurate setting of PSS not only cause damping of oscillations but also may help to amplify instability and lead to loss of synchronism. In this paper, Takagi-Sugeno fuzzy logic PSS designed with novel method call CDCARLA have been proposed for single machine-infinite bus (SMIB) power system model and compared with two IEEE standard PSS. Simulation results shows that designed PSS has better performance and more robustness than other PSSs. Brilliant properties of CDCARLA method is that it does not require to system dynamics and any other information about power system. In addition, this method does not ignore any nonlinear feature of power system; consequently, CDCARLA method can be one of automatic design method.