OICC Press Signal Processing and Renewable Energy (SPRE) 2588-7335 6 2 2022 06 01 Design of a PID-PSS Power System Stabilizer for Single-Machine Infinite-Bus Power System 67 83 EN Mehdi Mahdavian Department of Electrical Engineering, Naein Branch, Islamic Azad University, Naein, Isfahan, Iran Ali Asghar Amini Najafabad Branch, Islamic Azad University Mahnaz Hashemi Najafabad Branch, Islamic Azad University Journal Article 2022 06 01 Power system stabilizer (PSS) generates electrical torques by applying a signal to the excitation system, which reduces power oscillations. The PSS’s main function is to damp generator rotor oscillations. In this paper, the structure of a PSS based on PID controller for system stability enhancement is presented. The voltage regulator excitation system is equipped with IEEE type-DC1exciter model. The application of the controller is investigated by means of simulation studies on a single machine infinite bus power system. For the system without any PSS and the system with conventional PSS (CPSS) and proportional-integral-derivative PSS (PID-PSS), the system responses for three different conditions were obtained using equations linear simulation. Eigenvalue analysis is used for comparison. The simulation results show that the controller is effective in improving steady state and dynamic performances regardless of the system operating conditions.