Performance evaluation of PSS under different loading condition

The need of power system stabilizer (PSS) or supplementary excitation control is to apply a stabilizing signal through the excitation system to produce additional damping torque of the generator in a power system at all operating and system conditions. In this paper the study of the dynamic behaviour and small signal stability of the single-machine infinite-bus (SMIB) with CPSS under various loading condition is presented. Finally, the simulation results of system dynamic performance response for CPSS with parameters variation is achieved and discussed.