Research On Topology And Control Method Of Multi-port User Energy Router

The depletion of non-renewable power generation resources,the aggravation of global environmental problems and the frequent occurrence of power accidents are inevitable serious problems in today’s power industry.New energy power generation with advantages of flexibility,economy,and green has become a hot research field.The global power industry attaches great importance.In the future,users cannot rely solely on manual scheduling for power consumption.They should achieve energy management,energy routing and other tasks through autonomous interaction with the system.Small user energy routers for users can meet the individual needs of users and can achieve multiple energy access.Intelligent management of energy.Therefore,the paper studies the topology structure of the user energy router,analyzes the working mechanism of the user energy router,formulates the user energy router port control strategy,and proposes a coordinated control strategy and energy management method based on the DC bus voltage and the energy storage device charge state signal.Combining the frontier to improve the traditional energy routing strategy,an improved ant colony routing strategy based on edge weight assignment is proposed.The paper carries out the following research work:The paper first analyzes the power routing requirements of the user energy router,compares the possible topology types of the user energy router,and adopts a multi-port user energy router topology based on DC bus interaction.The proposed structure is a variety of distributed power sources and energy storage devices.Grid-connected conditions are provided.Secondly,the introduction of small signal analysis methods,mathematical modeling of different conversion circuits and accessible equipment,detailed control strategies for distributed DC power supply,distributed AC power supply,energy storage device,AC network and other interfaces,and set up simulations The model proves that the proposed structure and control strategy are in line with reality.Considering the impact of DC bus voltage fluctuation on system operation and the impact of the state of charge on the life of the energy storage device,a cooperative port control method based on the DC bus voltage signal is proposed.By setting a reasonable voltage interval,the output mode of different ports can be adjusted.Combined with system energy management requirements,the user energy router energy management mode and switching rules are given to improve energy utilization efficiency while ensuring the stable operation of the system.The simulation verified that the collaborative control method proposed in the paper can realize the energy coordination within the system and maintain the stable operation of the system for a long time.Finally,starting from the concept of energy routing,the paper analyzes the characteristics of traditional energy routing strategies in detail.To solve the problems of slow convergence and energy congestion,the idea of edge weight assignment is introduced,combined with the commonly used ant colony algorithm for energy routing,and edge weight assignment is proposed.The improved ant colony routing strategy,in order to avoid local optimization,introduces pheromone concentration restrictions,uses path cost and congestion as evaluation indicators to compare with traditional energy routing strategies.The results show that the energy routing strategy proposed in the paper is used in multi-energy router energy routing China has certain advantages.