Microgrid Reliability Evaluation Based on Condition-Dependent Failure Models of Power Electronic Devices

With the wider integration of renewable energy, the reliability performance of microgrids becomes a pressing issue because most renewable energy sources are intermittent. As power electronic systems play an increasingly important role in serving as interfaces for enabling renewable energy integration in microgrids, the reliable performance of power electronic systems is crucial in guaranteeing the overall microgrid reliability. However, the operational reliability evaluation considering power electronic influence was rarely studied. This paper aims at evaluating the reliability of microgrid considering the effect of power electronic devices. A new operational reliability model is proposed and a case study is carried out.