Optimal Configuration Of The Regional Integrated Energy System Including The Combined Cooling, Heating And Power Microgrid

Energy is an indispensable material condition in the process of sustainable development of human society.The consumption of traditional fossil energy sources is increasing,bringing about the dual problem of shortage of energy resources and serious environmental damage.In this context,the Integrated Energy System(IES)has been developed vigorously in recent years.Its application has not only reduced the consumption of traditional fossil energy greatly,but also solved the problem of pollutant emissions caused by the burning of traditional fossil energy.This paper models the regional integrated energy system(RIES)under two types after establishing various core equipment models in CCHP system,then studies and analyzes the various types of loads in the system.The specific research contents are as follows:(1)introducing research background and current situationThis paper introduces the research background of IES and the development status in the past ten years,clarifies the research significance of IES,and elaborates on the status quo of domestic and foreign research.(2)modeling equipment unit and networkThe core equipment in the CCHP microgrid and the hot network,grid and gas network included in the IES are modeled,and the network model is transformed into a mixed integer linear programming problem by piecewise linearization.(3)Optimization of integrated energy systems with heat networksA RIES with a heating network was established.The Monte Carlo simulation algorithm was used to simulate the electric,thermal and cooling loads in the RIES and the output of the photovoltaic unit.The model was simulated by two commercial softwares,YALMIP and CPLEX,to solve the daily load optimization results of RIES.At the same time,the article also analyzes the economic benefits brought by the operation of the heating network and the operating conditions of the heating network and the impact of the gas price on the operating cost of the system.(4)Research on comprehensive energy system optimization considering renewable energy consumptionIn order to increase the consumption of renewable energy,the consumption of photovoltaic power generation units(PV)is included in the operating cost of the system.Through simulation and comparison,after taking into account the consumption of renewable energy,the PV consumption rate in the system is improved significantly,which not only saves the traditional fossil energy,but also reduces the pollutants brought by the system operation.emission.Through the modeling and simulation of two types of RIES,the results of load optimization of RIES in one day are obtained,and ecological maintenance is taken into account,which provides a reference plan for modern multi-energy system planning problems.