Improvement of Power System Performance Using Fuzzy Logic Based Interline Power Flow Controller [IPFC]: A Brief Study

The nonlinear dynamic model of a multi machine power system incorporating an Interline Power Flow Controller [IPFC] was developed in this paper to improve damping of power system oscillations and transient stability. Under normal and abnormal operating conditions, the IPFC performance with PI controllers is compared to that of a fuzzy logic-based controller. Fuzzy Logic is a form of many-valued logic. The IPFC fuzzy controller is intended to coordinate two control inputs: voltage change and capacitor voltage change, in order to improve the transient stability of the multimachine system. To coordinate the additional damping signal, the Interline Power Flow Controller [IPFC] with fuzzy logic controller is designed with simple fuzzy rules. The proposed IPFC controller can improve the designed performance of the power system. The digital simulations are performed in the MATLAB environment.