ASSESSMENT OF VOLTAGE SAG AND SHORT CIRCUIT CURRENT IN A POWER SYSTEM INCLUDING FACTS DEVICES AND SUPERCONDUCTING FAULT CURRENT LIMITER

Abstract

Increasing generation capacity and interconnectivity of networks lead to increase in short circuit current levels in power systems. Using superconducting fault current limiter is an appropriate method to solve the fault current problems in modern power systems. In this article, voltage sag and short circuit current are evaluated in a typical power system equipped with interline power flow controller and resistive type superconducting fault current limiter. In addition, in order to evaluate the performance of under study power system in various conditions, different disturbances with three phase balanced load are considered. Simulation is done with MATLAB/SIMULINK software and simulation results confirm the better performance of system in asymmetrical faults than symmetrical one in both of voltage sag and short circuit studies.