Research On Distributed Energy Station Planning Considering Multi-regional Interconnection And Coordination

In recent years,the environmental problems caused by energy production and utilization have become increasingly serious.Optimizing the forms of energy use and vigorously developing clean energy have become strategic choices for most countries.The regional integrated energy system,which can solve the above problems through multi-energy complementarity,has become the focus of attention of scholars.Distributed energy station is an important carrier of multi-energy supplement for regional integrated energy system.It integrates multiple energy interaction units.Reasonable planning of DES equipment type and capacity can improve the utilization rate of assets,reduce investment redundancy and optimize the operation status of the system.And it is of great significance for RIES to transform theory into practice and realize efficient utilization of energy.At the same time,combined with the characteristics of regional resource endowment and load energy consumption,the interconnection and coordination of multi-regional energy stations can realize the interconnection and complementarity of energy resources among different regions,and enhance the overall economic and environmental benefits of the system.Based on the above background,this paper carries out the following main work:1)For the multi-region energy station interconnection and coordination system,the DES integrated model,the energy station interconnection power line and the heat pipe transmission model considering the energy transmission loss,and the DES integrated model considering the interconnection synergy are established.2)Based on mixed integer linear programming,a single-level linear DES equipment selection,capacity planning and operation optimization unified solution method(coordinated optimization of configuration and operation method,COCO)is established.Examples show that the proposed method can realize DES type selection and capacity planning on the basis of considering the optimization of system operation throughout the year,reduce redundancy of equipment configuration,reduce system operation cost,and have high solving efficiency for complex planning objects.3)A DES location planning method based on improved P-median model is studied.The location of multi-regional energy stations,the transmission distance of interconnected pipelines between energy stations and the supply load of each energy station are determined.At the same time,on the basis of interconnected pipeline transmission model and single energy station planning method,a configuration-operation collaborative optimization method considering multi-regional interconnection(Multi-regional interconnection configuration and operation coordinated optimization,MRI-COCO)is studied.The DES various types of energy equipment configuration,the selection planning of interconnected pipelines between DES and the overall operation optimization of multi-regional systems are realized.The rationality and feasibility of the proposed method are verified by an example.