Operation Analysis And Optimization Of CCHP Distributed Energy System

In the actual operation of gas-fired cooling and thermal power distributed energy projects in China,there are many problems such as large installed capacity and low utilization rate of units during operation.In order to maximize the advantages of gas-fired cooling and thermal power distributed system,comprehensive consideration should be taken in load forecasting to accurately judge the stable load of the project,so as to provide reliable reference for the selection of installed capacity.This paper starts with the basic theory of gas-fired distributed energy system,analyzes the load characteristics of the selected projects,establishes the mathematical model,and puts forward the way and strategy to further optimize the gas-fired distributed energy system.The work includes:1)taking a typical hotel energy consumption system as the research object,this paper analyzes the energy load characteristics of the hotel,analyzes the external load supply of the system,and provides a clear basis for the installation configuration and load demand;2)collect,summarize and classify the data of the actual load of typical projects(mainly the self consumption load of the gas cooling,heating and power distributed energy center);3)on the basis of the actual load,the optimization model with the minimum annual operation energy consumption cost C as the goal and the performance constraints of the main equipment is established,and a more efficient and reasonable typical daily waste heat utilization curve is drawn;4)according to the existing projects and installed capacity,the feasible optimization implementation strategy is given(and four typical working conditions are described in detail).Most of the time,the generator starts for 16 hours a day,and improves the actual operation efficiency by reducing the number of starts and increasing the power of a single generator;5)based on the experience and accumulated thinking in the above work,this paper puts forward some prospects for the development and research of gas-fired cooling,heating and power distributed energy system in the future,and points out the factors that are easy to be ignored,such as the cost of computer room occupation and the data collection of terminal energy consumption.For the gas cooling,heating and power distributed energy projects whose installed capacity has been determined or even put into operation,the primary task of optimized operation is to refine the collection of actual load,and formulate the next optimization strategy according to the actual load.The distributed energy system of gas-fired cooling and thermal power relies heavily on the load type and time distribution of energy using buildings,which often relates to the feasibility of technology and economy.In addition,the requirements of energy using buildings on safety,room area and other influencing conditions are also considered when implementing the distributed energy project of gas-fired cooling and thermal power.To sum up,the optimization model established in this paper and the optimization implementation strategy explored can have a positive impact on the selection of projects,but there is still room for further optimization in theory;at the same time,for other projects with different specific conditions,more factors should be considered to achieve the purpose of optimization.