Power system stabilizer tuning based on frequency response method

Stability phenomena of the power system are largely studied by the researchers over the last few decades. In order to ensure a stable power system, power system stabilizer (PSS) is adopted which can increase the stability margin by providing supplementary feedback signal. For an efficient stabilization, the proper tuning of PSS parameters is very important. Now a days, the tuning appears a big challenge as the changes in power requirement take place continually. This paper deals with the tuning process of PSS connected to the single machine infinite bus (SMIB) system. The tuning method is decided based on the transfer function from SMIB model and the system frequency response. Simulation results are presented with and without PSS to demonstrate the effectiveness of proposed tuning method.