An Optimizer to Tune Fractional-Order Power System Stabilizer for Synchronous Generator Considering Governor Effect and Exciter Voltage Fluctuation.

In this paper, an intelligent optimizer has been developed and applied to tune fractional proportional integral power system stabilizer (FOPIPSS) to suppress the low frequency oscillation in a synchronous generator connected in single machine infinite bus system (SMIB). As, the power network is interconnected system, the conventional methods of tuning fractional PSS are complex and time-consuming. To avoid the mathematical and calculation burden of parameter tuning of FOPIPSS, a comparative performance class topper optimization is developed. The proposed optimized FOPIPSS is examined for SMIB system under three different conditions: disturbance in mechanical torque, mechanical torque change in the presence of fluctuation in exciter voltage and disturbance in exciter voltage in the presence of the governor-turbine system. The result analysis shows the effectiveness of the optimized FOPIPSS for SMIB systems comparing with the existing results. [ABSTRACT FROM AUTHOR]