(1. College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;2. College of Electrical and Information Engineering, Changsha University of Science & Technology, Changsha 410004, China;3. Hunan COMBINE Distributed Energy Technology Co. Ltd., Changsha 410205, China)

Based on an analysis of research and development of the distributed energy system and combined cold, heat and power generation system (DES/CCHP), this paper presents an overall integration thought and technological integration scheme for regional DES/CCHP coordinated with the power system. With the coordinated optimization of structure and function based on the integration modes of variable structures, this paper presents the integration technology scheme on several regional DES/CCHP, the multi-source energy network system and the distributed renewable energy system. In the meantime, the collaborative and supplementary operation mode is employed on the basis of the dynamic composition of the energy utilization process to provide a common integration scheme for efficient, cascade use of clean energy and large-scale application of distributed renewable energy. The integration scheme is expected to be applied in a national demonstration project in Hunan Province.