STATCOM Control using a PSO-Based IP Controller

This study presents the application of static synchronous compensator (STATCOM) in order to simultaneous voltage support and damping of Low Frequency Oscillations (LFO) at a Single-Machine Infinite- Bus (SMIB) power system installed with STATCOM. PI (Proportional-Integral) type controllers are commonly used controllers for STATCOM control. But due to some drawbacks of PI type controllers, the scope for finding a better control scheme still remains. Concerning this problem, in this study the new IP (Integral-Proportional) type controllers are considered as STATCOM controllers. The parameters of these IP type controllers are tuned using Particle Swarm Optimization (PSO). Also a stabilizer supplementary stabilizer based on STATCOM is incorporated for increasing damping of power system oscillations. To show the ability of IP controllers, this controller is compared with classical PI type controllers. Simulation results emphasis on the better performance of IP controller in comparison with PI controller.

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