Research On Digital Twin Of AC And DC Microgrid And Its Application

The goal of carbon neutrality and the intelligentization of power systems equipment bring new opportunities and challenges to Smart Grids.The analysis and protection theory of future "double-high" power systems is not applicable,the interaction mechanism of Cyber-Physical Power System(CPPS)with highly integrated information flow and energy flow is unclear,and the digital transformation of Smart Grids is in the ascendant.In this context,building a Digital twin of power systems(PSDT)is one of the important ways to realize the safe,stable,and optimized operation of the future power systems,but how to implement it still needs to be explored.This paper focuses on the application of DT technology in AC/DC Microgrid,and conducts preliminary research on the reference architecture,construction path and technical system of the Digital twin of AC/DC Microgrid(ADMGDT).Firstly,this paper summarizes the research background and significance of ADMGDT summarizes the domestic and international research status of PSDT,and puts forward the focus of this paper;Secondly,the reference architecture of ADMGDT is proposed,and the functions and principles of physical entity layer,virtual DT layer,data management layer,intelligent center layer and application service layer are expanded respectively;Then,by analogy between AC /DC Microgrid construction and large-scale equipment manufacturing,the construction path and development stage of ADMGDT are proposed,and the stage characteristics and key technologies are discussed respectively;Finally,according to the laboratory conditions,RT-LAB,RTDS and OPNET are selected to build the real-time simulation platform of CPS,which is the preliminary exploration of the full digital real-time simulation stage in the construction of ADMGDT.