Study On Optimization Of Cooling Heating And Power System Coupling Biomass Energy And Photovoltaic In Xinjiang

With the shortage of fossil energy and environmental pollution becoming more and more serious,the utilization of clean energy and renewable energy is paid more attention.The CCHP system of biomass energy combined with photovoltaic can not only realize the cascade utilization of energy,but also make full use of renewable energy.It is one of the important energy supply systems in the future.This paper studies the combined cooling and heating power system of biomass energy combined photovoltaic in Xinjiang,in order to provide reference for its practical application.Based on the optimization results,the 3E comprehensive benefits of the CCHP system in different operation modes are obtained.Finally,the multi-objective comprehensive evaluation is carried out for different CCHP systems,and the advantages of the research system in this paper are obtained.The specific research contents are as follows:Firstly,the principle of the CCHP system of biomass energy combined with photovoltaic is introduced.The gas internal combustion engine,photovoltaic cell,absorption chiller,compression chiller and gas boiler in the CCHP system are modeled,and the energy flow model and evaluation index of the system are established.Secondly,according to the energy supply scheme of the system,taking the primary energy saving rate,annual cost saving rate and carbon dioxide emission reduction rate as indicators,the optimization objective function of the system is established,and the system is optimized by using genetic algorithm.Combined with the annual cooling and heating load of an industrial park in Xinjiang,Python is used to optimize the system,and the system capacity configuration results,as well as its advantages in energy and environment are obtained.Thirdly,based on the results of system optimization,four different operation modes of CCHP system are studied with daily cost saving rate,daily primary energy saving rate and daily carbon dioxide emission reduction rate as evaluation indexes.Based on the cooling and heating loads of the selected cases,the 3E comprehensive benefits of the typical days in winter,summer and transition season are calculated under four different operation modes,and the optimal operation mode is obtained.Finally,according to the optimal configuration results and the optimal operation mode,five different CCHP systems,including the system studied in this paper,are comprehensively evaluated.The five different CCHP systems are comprehensively compared from four aspects of energy,economy,environment and society,and the comprehensive ranking is obtained,and the CCHP system of biomass energy combined photovoltaic is given the advantages of unification.