As the world’s new energy strategy forward

distributed generation of wind

solar and diesel will become an important form of energy production.It will change the structure and operation of the grid in the medium and low voltage level with the micro-grid and smart grid.The respective characteristics and the development of distributed generation

micro-grid and the smart grid were summarized and analyzed in this paper

and the concept of distributed smart micro-grid system base on new energy was proposed

its main components and key technologies were analyzed

and a typical distributed smart micro-grid system base on new energy was set up.