Rural grids are distribution networks situated in remote areas, linked to the main grid with long overhead Medium Voltage (MV) lines. These grids are usually characterized by aged infrastructures, that suffer for high vulnerability and low resilience in case of fault. For these reasons rural grids are weak distribution networks that ask for more reliability, higher ability to guarantee a continuous supply in case of fault and better power quality service. The constitution of Rural Microgrids, able to operate both in grid-connected and in islandmode, can provide a solution. The guarantee of a continuous power supply for the consumers of the microgrid is linked to the increase of self-sufficiency that, nowadays, thanks to the develop and to the cost decrease of technologies, can be based on the exploiting of Renewable Energy Sources (RES).