Research on Distributed Identity Authentication System for Distribution Grid Based on BeiDou Satellite
Currently,the distributed control identity authentication security system for distribution grid mostly adopts blockchain technology and biometric identification technology,but these two technologies are susceptible to the influence of device geographic information deviation,which reduces the authentication efficiency of the system.For this reason,a distributed identity authentication system for distribution grid based on BeiDou satellite is proposed.With reference to the basic functions and overall architecture of the system,an integrated communication board and negative feedback circuit are designed to provide hardware support for the system.BeiDou satellite positioning technology is utilized to capture the intermediate frequency signals of the operation and maintenance equipment,and the geographic information is corrected by calculating the Doppler shift of the signals,which is combined with the data parsing and digital identity management module to complete the design of the identity security authentication system.The debugging and comparison results of the system show that the certificate processing time of the proposed system is kept within 20 ms,and the average delay is significantly lower than that of the comparison system.The proposed system has higher authentication efficiency.
Distribution gridBeiDou satelliteDistributed controlIdentity security authenticationBlockchain
万方数据
维普
