The Scheme Research And Performance Simulation On The Distributed Heating-Cooling-Power Energy Supply System

With the development of the distributed energy technologies, the advantages, such as high efficiency of energy utilization, less pollution, lower energy consumption begin to appear and gradually distributed energy becomes an important way of the development and utilization of energy. But the distributed energy is not to solve the global and wide range of energy supply and demand balance or resource allocation optimization problem. the focus is to meet the demand of special occasions and solve the industrial and regional comprehensive utilization of resources and energy cascade utilization.Based on the thorough analysis of the device configuration and integrated forms of the distributed energy system, this paper summarizes the evolution index and calculation model of the distributed energy system, and taking a hotel as the research object, this paper does some research in the project selection and performance simulation.Through the analysis of the cold heat and power load of the hotel, this paper designs three different kinds of energy supply schemes based on gas turbine and internal combustion engine, To meet the load demand all the year around, it arranged different waste heat recovery and cold supply schemes and analyzed the performance of the energy supply system, such as total energy utilization rate, relative energy saving ratio, the recovery period of investment and environmental performance. Besides, this paper does some sensitive analysis of different schemes and respectively expounds the influence of electricity and gas price.In order to study the performance of the CCHP system, this paper established the mathematical and simulation model of the main energy supply equipment in the system. During the modeling process, based on the S-function and Sub-system module in the MATLAB/SIMULINK software, this paper established the package model of the afterburning waste heat boiler and the parameter setting interface. Secondly established the slblocks.m function and the simulation model library of the CCHP system and present in the form of interface.Finally, the system is simplified and established the simulation model for the second scheme design, besides, study the influence of gas turbine load rate, afterburning rate and the regeneration rate on the system performance. In a word, this paper provides a theoretical basis for operation optimization load matching and choosing the best control strategy for the CCHP system.