Augmentation of Low Voltage Ride Through in AC Microgrid using Fault Current Limiting Function of Supercapacitor

Abstract

Power generation from renewable energy sources is fluctuating in nature, and addition of an energy storage system to the microgrid is indispensable. Here, a fault current limiting scheme is proposed using supercapacitor in fusion energy storage system. The system constitutes PV and WT as sources and battery-supercapacitor as combined energy storage backup. The controller switches the supercapacitor so as to limit the increase in current due to fault, which prevents tripping of generator and thus aiding low voltage ride through. The proficiency of the anticipated modeled system is validated by simulating the major faults in the modelled microgrid. The system is modelled in MATLAB/ Simulink background and studied.