Research On The Optimal Allocation Of Distributed Generations In CCHP Microgrid

Energy is the decisive factor in the development of national economy. As the traditional fossil energy reserves are reducing, the revolution of energy consumption patterns and energy efficiency has become a worldy problem, yet it is also a opportunity of development. Distributed clean generation and the rational use of natural gas and the power substitution of primary energy will play a decisive role in it. CCHP Microgrid has plenty of advantages, such as higher energy efficiency and more reasonable integration of distributed energy resources. At present, there has been a pilot study in China, but the theoretical research still needs to be further improved, and the actual application needs to be further verified by experiments.The model of CCHP Microgrid was established, and optimization research on capacity optimal allocation and access system will be further investigated. Yongfeng District in Haidian was taken as a case for the construction of CCHP Microgrid.Firstly, the economic analysis is carried out in detail about a building and the whole year is divided into three time periods. The results show that the economic performance of the triple system is very obvious. Secondly, the energy storage device is added to the CCHP Microgrid and the model is divided into two kinds of operation mode. In order to study the optimal capacity configuration of micro power supply, the target function of minimum annual energy cost were established, under certain constraint conditions, parameter setting, and determine the scheduling strategy. Thirdly, the influence of CCHP Microgrid on the power supply reliability of distribution network was summarized. In order to ensure the reliability of the power distribution system, the paper has established the model of net income after the implementation of distribution automation. The model of net income contains an improved algorithm of minimum cut sets of load point and fault repair time mathematical model under the condition of distribution automation. Combined with the power supply area designated by the state grid corporation classification, the suitable for differentiation of each power supply division the best distribution automation solution was put forward.