Abstract
With the energy construction of islands, remote rural areas and the rapid advance of new-energy model area, Smart City, a large number of small rooftop photovoltaic systems, mini-hydropower plants, small wind power and other small distributed power will be widely used. Single distributed power generation system cannot meet the needs of users. China has a vast land, the energy structure and energy demand are different. Combined with local energy, economy and environment, study multi-energy supplementary miniaturized distributed generation, make more reasonable use of energy.