Survey on key technologies of microgrid

Microgrid is a new type of network structure,which provides an effective way for implementing active distribution network. The development and expanding of micro-grid can promote the large-scale integration of distributed generation and renewable energy sources, and ensure the transition from traditional power grids to smart power grids. This paper, starting from the fundamental concepts of microgrid, the component of microgrid and its relationship with the large grid, basing on introducing the present situation of study on microgrid both at home and abroad, makes a clear idea of the key technology about microgrid. According to the theory of microgrid and the research achievements both at home and abroad, some advices and prospects for the study on microgrid are also given.