The Design And Research Of Comprehensive Energy System Based On The CCHP System

The combined cooling and heating power(CCHP)system is the important form of energy cascade utilization and one of the important developing directions of energy utilization.It has the advantages of good economic benefit,high efficiency and friendly environment compared with the traditional energy supply system.The combined cooling,heating and power supply system use fuel,gas,coal and other fossil fuels as drivers,but because the fossil energy is reducing day by day and the use of a series of energy and environmental issues makes this system appears to fly in the ointment.Based on this,this paper has done an in-depth study on the comprehensive energy system。First of all,this paper takes a district in Baoding as an example Baoding as the research object.Through the study of cooling,heating and power load characteristics and the photovoltaic power generation capacity available of the district all year round,its operation plan,configuration principle and equipment can be chosen.So a good foundation can be set for the system design program.Then,the paper introduces the selection of PV modules in PV grid-connected power generation system,the design of PV array,the control mode of the inverter and the available capacity of the system.Based on this,the layout design of the photovoltaic array and the system capacity of the district are analyzed and calculated in detail.The theoretical and practical data analysis of PV grid connected system in residential area is given.Thus completing the design of the photovoltaic grid connected power generation system.Finally,a comprehensive energy system based on the CCHP system is proposed,and a cold and heat triple connection system with photovoltaic power generation system is designed to improve the traditional triple supply system.Moreover,in this paper the benefit analysis of district’s comprehensive energy system is compared with the traditional energy system.The results of calculation and analysis show that the combined system of hot and cold power supply combined with PV power generation system has a more flexible operation mode and better economic benefits.It has the advantages of economic scheduling,energy conservation,environmental protection and energy efficiency improvement.