Day-Ahead Centralized Optimal Dispatching of Active Distribution Power System with Combined Cooling, Heating and Power-Based Microgrids

摘要

Several combined cooling heating and power (CCHP)-based systems are linked up to active distribution network in the form of microgrid groups. Analyzing the economic cost of whole system brings great challenges to the traditional optimized economic dispatch. After analyzing equipment composition and energy flow, the equipment are modeled independently, and then energy balance constraints are established by the load types in CCHP-based microgrids. CCHP-based microgrids and active distribution network as a common subject, use centralized modeling methods to establish an economic optimization goal. Based on the example of Zhongxin ecologic city in Tianjin, it shows that the optimization of economic dispatch of CCHP-based active distribution system is effective, which can achieve the lowest economic cost of the whole system.