Design And Operation Optimization Of Regional Distributed Heat Pump System

Energy shortage and environmental deterioration have become important factors restricting the healthy and sustainable development of China’s economy.Protecting the ecological environment,adjusting the energy structure and rationally utilizing resources have become important issues in the national development strategy.China has clearly put forward the goal of reaching the peak of carbon emissions in 2030 and achieving the goal of carbon emission neutrality in 2060.In this context,the regional distributed energy system combined with renewable energy utilization technology has been widely concerned and applied by the society due to its advantages of energy conservation and environmental protection,and has a good development prospect.The regional distributed energy system combined with geothermal energy utilization technology is called the regional distributed heat pump system.The system is built near the client and can efficiently utilize geothermal energy and achieve a cascade of energy utilization.However,it is also a complex and multi-technology integration system engineering,which is easily affected by many factors such as regional climate,urban economic level,building energy characteristics and so on.If the system is not optimized in advance,it is bound to affect the energy conservation and stability of the regional distributed heat pump system.This article mainly discusses the initial planning and operation optimization of the distributed heat pump system.Firstly,based on the introduction of the concept,composition and application of the system,and aiming at economic optimization,the "source-network-load" integration optimization model and the system joint operation optimization model were established respectively.The optimization programming was carried out with LINGO software,and Floyd and branch-and-bound algorithm were used to solve the models respectively.The location and capacity of the energy station in the heating energy system,the optimal layout of the transmission and distribution pipe network and the optimal configuration and operation scheme of the heat pump system can be obtained.Finally,the rationality and effectiveness of the model are verified through the analysis of an engineering example.Based on the establishment of the optimization model,this paper takes an international business district in Dalian City as an engineering example to simulate and analyze the annual dynamic load of buildings in the region by using De ST software to obtain the overall annual hourly cooling and heat load indexes of the region,and to sort out the relevant calculation data and parameters and put them into the optimization model.To the initial business district(CBD)of power system planning and system operation optimization,and the optimized scheme is compared with the traditional scheme analysis and economic evaluation,through the analysis shows that the optimized plan is more economic than traditional,energy saving and environmental protection,can provide certain guidance for subsequent engineering practical application reference,also provide reference for related research.