Influence of inverter interfaced distributed generation and its control on power system protection in microgrids

Abstract

This paper focuses on interaction of inverter interfaced distributed generation (IIDG) into medium voltage and low voltage networks and its effects on power system protection in microgrids. Major focus of this work is to investigate the dependence of short circuit current levels on control schemes applied to inverters in microgrid, and mode of microgrid interconnection. The importance of considering different inverter control modes while developing microgrid protection schemes is proven by using MATLAB/Simulink model of benchmark microgrid test case.