Research And Design Of Key Modules Based On DC Power Packet Transmission

Large-scale distributed power access to power grid will have impact on its stability.Energy Internet,as a new energy utilization system,deeply integrates electricity and information to construct power grid with the concept of Internet.Micro-grid is the most important component of its transmission power,which solves the problem of connecting distributed energy to the grid.Since distributed power generation mainly produces direct current,and more and more load devices have the DC property,the choice of incorporating into the DC grid will reduce the power loss caused by the power conversion link,and improve the system reliability.The distributed power supply is distributed at the client end,and the user is both the consumer and the producer.Power packet transmission can adjust the power produced and consumed by the distributed power supply,so as to ensure the stable operation of the system.In this paper,the DC power packet transmission system and its key modules——power packet and power router are studied and designed.In this paper,the power information fusion technology and the power packet distribution principle in the DC power packet transmission system are studied.On this basis,a point-to-point power controllable transmission system from two DC power sources to two loads is built.Each module in the system is developed,and the physical platform verification of the system is completed.Power packet,as the power transmission form in the system,can realize the digital transmission of power.In this paper,the power packet is studied.On this basis,the concept of a new power packet is put forward,and its structure,function and synthesis algorithm are studied and designed,and the simulation and discussion based on MATLAB are given.Power router,as the interconnection hub in the system,can schedule power packets flexibly and intelligently.The paper designs its network layer,analyzes and calculates the power loss caused by the power packet transmission process by analogy with the Internet router,proposes a set of power routing algorithm,and uses MATLAB to simulate and discuss the algorithm in two scenarios respectively.