Microgrid, Distributed energy resources, Transmission System, Islanded Operation, Solar Panel, and Voltage Control
Microgrids are Small- scale version of traditional large power grids functioning either autonomously or with inter connection to the main grid. Microgrid provides efficient, low cost, clean energy and improve the stability of the regional electric supply it also has no transmission system. Primary function of micro grid is to serve power at distribution level. DERs connected to the micro grid enable reliable and efficient operation of micro grid. This paper addresses operation of microgrid voltage control and protection. The main aim of this paper is three- fold. First, a control strategy for inverter based solar panel is purpose to control voltage during islanded operation. Secondly, a protection scheme is proposed to protect both the lines and solar panel during islanded operation. Lastly, both the control scheme and protection scheme and coordinate and synchronized with each other to avoid malfunction.