Real time digital simulation of a static var compensator with fuzzy supervisory control

This paper discusses the real time digital simulation of a Static VAr Compensator (SVC) with fuzzy logic based supervisory control to damp the oscillations seen in the voltage after disturbances. The main controller is a traditional PI-controller and the auxiliary control path is made using fuzzy logic controller to provide the damping action. Therefore, the resultant is a non-linear controller, which performs better than the linear PI-controller. The controller performance is tested by connecting the SVC to a multi-machine power system, which is modeled in RSCAD software. The Real Time Digital Simulator (RTDS) is used to simulate the test system and the results are presented to show the improved performance of the proposed non-linear controller.