Study Trends and Challenges of the Development of Microgrids

With the global energy crisis and the increasingly serious environmental problems, renewable energy becomes a future energy trends. As an important form of renewable energy used, distributed generation (DG) has been rapid development in the world. However, large scale integration of DGs will bring operating and challenges to the power system network. A microgrid is an important means to this problem, and gained much attention worldwide. This paper introduces the basic concept of microgrid, and analyze the new trends and challenges of the development of microgrids, as well as some technologies. These trends and challenges include higher renewable energy integration, multi energy forms, multilevel architecture, demand side management and generalized storage.