Abstract

This paper presents a method to find the optimal position of resistive superconducting fault current limiter (SFCL) for transient stability enhancement of multimachine power system. The method is based on minimization of rotor angle separation of synchronous machines present in the system. The SFCL can have different impacts (positive and negative) according to its resistance value and location in the power system when a fault occurs. The studies are carried out on the loop electrical power system based on the Western System Coordinated Council (WSCC) three machines, nine-bus system to evaluate the effectiveness of the method by using MATLAB. The optimal location of SFCL combine with its resistive valve reduces the angular separation of the rotors that improve effectively the system stability during fault.