Research And Protection Of Failure Characteristics Of New Multi-terminal Energy Router

With the access of green energy generation equipment,energy storage devices and various forms of power load,the traditional power system equipment can no longer meet the control requirements of various power forms,multi-directional energy flow and power flow,and can not match the development needs of the power market.On the one hand,it can provide more interface options for various types of energy generation devices and load devices,maintain the richness of electrical forms,and realize multi-directional energy flow and active control of power flow.The close fusion with mobile information exchange technology enables the energy router to obtain instant messaging and intelligent decision-making capabilities,which can be based on the operating state of the power system and the signal indication of the power load user and the control center.To realize the active control of power grid energy flow.First of all,this paper analyzes and introduces the research situation of energy routers,foreign research status,domestic research status,etc.,focusing on the analysis of the mechanism of energy routers,topology information and so on.Based on this,a four-port energy router is proposed,and its topology and control strategy selected by each module are introduced.Next,according to the structure characteristics of the energy router,the fault problem and the cause of the problem are judged.The circuit fault mainly includes the fault problem of capacitance,high frequency transformer,electronic device and so on.In the main circuit fault research scheme,in order to solve the energy router fault,the bridge arm redundancy measure and the bypass redundancy measure are designed,the independent model is created by using the Matlab/simulink software,and the operation of the redundancy measure is analyzed in combination with the simulation experiment.The article also creates independent energy routers according to the application scenario of energy routers,maintains the integrity of the simulation model,and objectively evaluates the input and output port faults of energy routers,mainly the interaction mechanism between short circuit faults,open circuit faults and energy routers.Finally,through the application of energy router,the paper realizes the effective protection function,completes the system design work,evaluates the hardware protection circuit demand,introduces the analysis current,humidity,temperature,voltage and so on multi-level protection action mechanism,formulates the power electronic transformer routine operation thought.Finally,a small energy router prototype is built and a simple fault protection system is built in the test prototype.