Microgrids are indispensable at the distribution level network and is capable of operating in both grid connected and islanded modes. Integration of renewable sources in a microgrid is a viable solution to provide continuity of supply to customers. Due to bidirectional power flow, conventional protection strategies are not applicable to microgrids. Also the change in topology of the network poses a key challenge to protection engineers. This paper reviews the advent of microgrid and also the protection strategies that are incorporated in the system integrated with renewable energy systems (RES).