Abstract

The existing power transmission capabilities can be flexibly controlled and enhanced with the help of new technology called Flexible AC Transmission System (FACTS). This power electronics based technology can be used individually or in coordination with other controllers. Static VAR Compensator (SVC) is a shunt connected FACTS device, used for voltage control and for reactive power compensation. In the existing system, the SVC uses a PI controller, which though simpler and cheaper, not suitable for non-linear characteristics. In order to overcome this, the controller is designed as a combination of both PI controller and Fuzzy Logic Controller, thereby gaining the joint advantages of both types. The designed model has been tested in a 2 machine 3 bus test system using MATLAB software. The simulation results show that the new controller logic gives better and quick performance compared to the other types.

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