| With the continuous deepening of my country’s energy reform and the development of distributed energy systems.demand-side resource types and energy demand scenarios have become more and more complex.The economic,clean,efficient,and intelligent multi-dimensional energy supply demand of the demand-side energy system will become increasingly prominent.As a form of hybrid energy supply,the integrated energy system integrates the multi-energy complementation of "cold,heat,electricity,and gas" and the coordinated advantages of "source,grid,load,and storage" in multiple links.It will greatly meet the needs of user-side energy system construction.The development characteristics of the integrated energy system are adapted to the current trend of China’s energy development.However,due to the complexity and professionalism of its technology,the implementation of China’s integrated energy system is still in its infancy.At the current stage,the scientificity and rationality of the plan are important factors that affect the effect of the system.Therefore,the implementation of key technologies for the optimization of integrated energy system planning is the key to achieving cost-saving and efficiency-increasing of the user-side energy system.Based on this,this paper establishes the mechanism model of horizontal and vertical two-way complementary from the perspective of horizontal "hot and cold electrical" multi energy coupling and vertical "source network load storage" multi link complementary.Combined with the existing research status,this paper focuses on the collaborative method of heterogeneous energy network in planning and optimization,and modeling the planning and optimization of integrated energy system based on network constraints.By analyzing the optimization characteristics and optimization requirements of the model,an adaptive algorithm is proposed to realize the modeling and implementation of integrated energy system planning optimization technology,which provides a theoretical basis for the optimization of integrated energy system planning scheme on the customer side.The main research contents include the following aspects:firstly,the coupling principle of integrated energy system is analyzed,and the deep energy coupling coordination mechanism is clarified,which provides a theoretical basis for the planning and optimization of integrated energy system in complex scenarios.Secondly,the transmission mechanism and rules of different networks are analyzed,the transmission model and loss model of cold and hot pipe network are established,the diversified network regulation modes are proposed,and the boundary constraints and physical model of the planning and optimization problem of integrated energy system are established.Thirdly,the planning optimization model of integrated energy system is constructed,and the multi-objective models of economy,independence,environmental protection,network balance constraints and system operation constraints are established.According to the complexity of the optimization model and the demand of nonlinear solution,a multi-objective group search algorithm with adaptive covariance and Levy flight is proposed,It provides a theoretical basis and implementation method for the planning and optimization of integrated energy system.In this paper,based on the existing physical model of distributed energy equipment,considering the network transmission mechanism and regulation characteristics,through the construction of cold,heat,electricity and gas heterogeneous energy network transmission model and loss model,the network regulation ability in the integrated energy system planning method is refined.This study solves the problem of integrated energy system planning and optimization under complex scenarios considering network transmission characteristics and transmission constraints,supports the clean development path of China’s demand side under the dual carbon goal,and creates a new scenario of renewable resource utilization and distributed generation consumption on the user side of power system with new energy as the main body,so as to provide reference for the clean,low-carbon and sustainable development of China’s energy supply Economic transformation provides user side solutions. |
