Small Signal Stability Improvement by Power System Stabilizer (PSS)?

The stability of power electrical networks is a key factor for the delivery of high quality energy. A power system stabilizer (PSS) is designed to deliver a supplement excitation signal to a synchronous machine, to limit frequency oscillations. A Power System Stabilizer (PSS) is the most cost effective approach of increase the system positive damping, improve the steady-state stability margin, and suppress the low-frequency oscillation of the power system. The aim of this paper is to investigate the foundation of a PSS and its effect on the performance of a power system and its eigenvalues. According to a profile of a generator and local load simulate the system and the eigenvalues of the system without obtaining PSS. Then, the controllers designed by two different techniques, and discuss each part separately. This design methodology is implemented on a Single Machine Infinite Bus (SMIB) system. Simulation results on SMIB show the effectiveness and robustness of the proposed PSS over a range of operating conditions and system configurations.