Optimal PSS Design Using Particle Swarm Optimization Under Load Shedding Condition

Power System Stabilizer (PSS) is a supplementary control that provides additional control actions on the excitation side of the generator. In this study a Particle Swarm Optimization (PSO) based tuning method is proposed to optimize the PSS parameters. PSO optimization results obtained optimal tuning results and fast computing processes. With optimal PSS parameters, the optimal PSS performance is obtained. The combination of PSS and excitation is used to reduce the oscillation that occurs in the system. In this research a case study of load addition and load shedding is used. From the simulation results it is found that the performance of the system performance is improved by installing Power System Stabilizer which is optimized with PSO. System performance is shown by the response of the generator speed and rotor angle which results in a small overshoot and a faster settling time when there is an increase in load and also load shedding. Increased system performance is also viewed from the negative system eigenvalue, negative eigenvalue indicates the system is stable.