Differential Protection of Microgrid based on Rate of Change of Apparent Power

Increasing penetration of renewable energy sources in microgrid increases the complexity of coordinated control and protection issues. Differential protection seems to be reliable and accurate. This research proposed a new differential protection scheme to detect different types of series and shunt faults using rate of change of apparent power. This proposed technique has been implemented using MATLAB with a standard microgrid test system. Simulation results show that the proposed method is able to detect faults with less detection time and higher accuracy.