Configuration Optimization Modeling Of Integrated District Energy System

The research of integrated energy system optimization is of great significance and role for the development of energy Internet.The system configuration and operation scheduling optimization of integrated energy system based on energy hub model can fully realize various forms of energy complementary and heterogeneous energy collaborative optimization.Integrated energy system planning and optimization modeling is the basis of reasonable system configuration and economic operation,and is one of the key issues in the development of integrated energy system.Focusing on the optimization of the comprehensive energy system,the typical equipment models of energy conversion equipment,energy storage equipment,renewable energy power generation equipment and the optimization model of system configuration and operation scheduling are established.The rationality of the established model is verified by typical engineering casesFirstly,the research background and development status of integrated energy system are summarized,and the work of this paper is summarized based on the following chapter.Secondly,the mathematical model of the integrated energy system is established,which mainly involves the energy conversion relationship of typical energy equipment such as fan,photovoltaic panel,triple power supply system,boiler,heat pump and energy storage,and the energy flow relationship within the system.Considering the energy coupling characteristics of the system and the combination of various energy system technologies,the bus structure is adopted to describe the energy balance relationship of the system;Through the typical equipment model,the coupling relationship between various kinds of energy is constructed to coordinate the relationship between the overall energy demand of the system and the output and energy flow distribution of each equipment.At the same time,on the basis of the general energy storage model,considering the different operation strategies of different energy storage systems,the energy supply and energy storage equipment models of heat storage and ice storage system are established.Thirdly,a bi-level optimization model based on Improved Particle Swarm Optimization and mixed integer programming is established to optimize the system configuration and operation scheduling.This paper combs the improved methods of the algorithm,and analyzes the selection of improved methods to adapt to different scenarios under the capacity optimization problem.Finally,based on several typical engineering cases of the energy supply system of industrial park,different system configuration schemes are proposed and calculated to verify the feasibility of the integrated energy system optimization model.