Optimal Scheduling Of Cchp Microgrid Considering Virtual Energy Storage Of Buildings

With the growing problems of energy crisis and environmental pollution,research and development of microgrid and cogeneration technology is currently the most effective measure.Distributed energy is provided to users by the microgrid.Compared with the traditional power supply method,the energy supply distance is greatly shortened,and the line loss can be reduced to almost zero,which solves the problem of flexible and grid-connected distributed energy.The application of the co-supplied technology in the microgrid can utilize the low-quality thermal energy generated by the distributed power source for heating or cooling,achieving the cascade utilization of energy,and greatly improving the comprehensive energy utilization rate.In the energy loss of microgrid power supply,building energy consumption usually accounts for the vast majority.Based on the in-depth study of the virtual energy storage characteristics of buildings,the paper focuses on the microgrid of buildings,considering the virtual energy storage characteristics of buildings.The research on combined cooling heating and power system for microgrid optimization scheduling is carried out.It is of great significance for achieving energy saving and emission reduction.The content is as follows:(1)The background,principle,development status and main problems of optimal scheduling of microgrid and CCHP technology are studied.(2)A model of combined cooling heating and power system is designed,which uses solar energy and wind energy to analyze and model the main equipment of the system.Energy-saving calculation and analysis were carried out on human thermal comfort climate adaptation models in different climate regions of China.The virtual energy storage model and the human thermal comfort climate model were established,and the building heat balance equation was derived according to the heat balance equation.(3)A multi-objective optimal scheduling model for microgrid considering the virtual energy storage of buildings including CCHP is constructed.The analytic hierarchy process and improved adaptive particle swarm optimization algorithm are used to solve the problem.Taking the climate model of the cold region as an example,the simulation results show that the scheduling of the CCHP microgrid considering the virtual energy storage of buildings can improve the economic,environmental and energy utilization performance of the system on the premise of guaranteeing human comfort.