Optimal Configuration And Scheduling For The CCHP System Based On Biomass And Solar Energy

With the worsening energy shortage and environmental pollution,the combined cooling heating and power(CCHP)system is concerned for its characteristic of energy saving,high efficiency and environmentally friendly.As the typical representative of the new energy CCHP system,the CCHP system based on biomass and solar energy can achieve the cascade and fully utilization of renewable energy,which is the future development direction of distributed energy supply system.This thesis proposed an optimal configuration scheme for the CCHP system based on biomass and solar energy,which improves the system performance effectively.The main work of this thesis is as follows:Firstly,this thesis proposed a structural design scheme of the CCHP system based on biomass and solar energy.Characteristics of biomass gas,photovoltaic cell and internal combustion generator were analyzed,and the energy transform model of internal combustion generator was established.In addition,an evaluation standard focused on economy,environmental,and energy saving for the proposed CCHP system was established in this thesis,which]aid the foundation for the following research.Secondly,an optimal configuration model aim to achieve the integrated optimal of annual integrated cost savings rate,annual energy savings rate and annual CO2 reduction rate of the proposed CCHP system was presented.Furthermore,the thesis taken the annual heating,cooling and electric load of an office building in Jinan as an example,and genetic algorithm was used to optimize the capacity of each device and the minimum load rate of internal combustion generator,which verified the validity and feasibility of the proposed optimal allocation method.Then,the day-ahead optimal scheduling model is proposed to achieve the optimization of the daily operating cost,daily primary energy saving rate and the daily emission reduction rate of CO2.Taking the load of an office building in Jinan as an example,the optimal strategy of the proposed CCHP system was solved out,which verified the validity of the proposed optimal operating method by comparing with the traditional operating mode.Meanwhile,a traditional CCHP system was proposed as contrast system.The characteristics of the optimal CCHP system and the contrast system were analyzed,which revealed the advantages of the optimized system in comprehensive performance.At last,according to the requirement of "863 project" "Novel High-performance Biomass Gas Combustion Engine and Demonstration of CCHP System",a CCHP system optimal operating software was accomplished and used in the practical engineering,which verified its feasibility in engineering applications.