Fault Current Reduction & Over Voltage Control Technique In A Distribution Systems With Distributed Generation Units By Using An Active Type Sfcl

Abstract

Now a day's Faults are occurring commonly in the power systems. Superconducting fault current limiter is an eye-catching electronic device to solve the problematic of very high fault current in the power system. In this paper, the performance of enriched system capacity with existing switchgear by superconducting fault current limiter is studied. At first, a resistive type SFCL is modeled in Simulink. The active SFCL is composed of an air-core superconducting transformer and a PWM converter. The magnetic field in the air-core can be controlled by adjusting the converters output current, and then the active SFCLs equivalent impedance can be regulated for current limitation and possible overvoltage suppression. In this paper a novel active PV based SFCLs is designed and simulated in MATLAB. The simulation results show that the active PV based SFCL can play an palpable role in restraining the fault current and overvoltage, and it can contribute to avoiding damages in the power system
Index Terms: PV; superconducting fault current limiter (SFCL); DG; Fault.