This project to proposed by overview of the most important issues raised by the use of power systems. with respect to need for modified of existing grids in the direction of intelligent Micro grids. The main problems and bound up of the construction of Grids and the power station, as well as functioning in them of the most important power electronic systems are power quality control, both primary converters control and secondary system coordination are required. with a focus on the hybrid AC/DC micro grid harmonics compensation and unbalance compensation. For multiple interfacing converters, the secondary control with system-level coordination. Special attention is directed therein to the potential possibilities of so-called ‘smart’ transformers and V2G technologies.