Research On Switching Control Strategy In Low-voltage Micro-grid Operation Mode

Currently,the global economy is at a stage of rapid development.During the development of economy,energy consumption is increasing and energy problems are emerging.Therefore,in order to solve the abnormal supply of power systems due to energy shortage,Micro-grid technology has begun to emerge.The core of microgrid technology is that it belongs to a low-voltage mode of operation.In addition,it also has electrical energy storage capabilities and can effectively communicate with large grids without interfering with each other.Used in the world's new type of power grid.Inverter is an indispensable control device in microgrid control.This kind of equipment can make the control mode of microgrid system achieve a smooth transition.Firstly,based on some mathematical related theories,this paper establishes a mathematical research model of the inverter and studies various transformation modes of the inverter.At the same time,combined with the unique dual operation mode system in the microgrid,it is explored how to achieve a smooth transition between independent operation and grid-connected operation in daily use of the microgrid.In the operation of the microgrid,adding related equipment of the inverter can effectively solve the problem of mode switching of the microgrid.The inverter has the function of regulating the microgrid network,which can realize a smooth transition of multiple functions,and each function There will not be repeated effectsbetween modules.This excellent system is used by more and more power companies for microgrid technology.Inverter technology has become the mainstream technology in the microgrid industry.Finally,the study of related problems is modeled in Simulink software,and the real inverter working state is fully simulated by means of software simulation.It is found that the inverter designed in this paper can make the microgrid equipment work normally,and in the microgrid mode switching,the normal mode switching can also be achieved without causing a failure phenomenon.Storage system,so when the power supply of the external network is insufficient,the power can be replenished in time to ensure the normal operation of the equipment.