基于5G通信的配电网差动保护技术研究  

Research on differential protection of a distribution network based on 5G communication

作　　者：张建雨 姜睿智 李俊刚[1] 刘洋[1] 崔龙卫 宋戈 江伟建 徐涛[1] ZHANG Jianyu;JIANG Ruizhi;LI Jungang;LIU Yang;CUI Longwei;SONG Ge;JIANG Weijian;XU Tao(Xuji Group Corporation,Xuchang 461000,China;State Grid Chengdu Power Supply Company,Chengdu 610000,China;State Grid Jiaxing Power Supply Company,Jiaxing 314000,China)

机构地区：[1]许继集团有限公司,河南许昌461000 [2]国网成都供电公司,四川成都610000 [3]国网嘉兴供电公司,浙江嘉兴314000

出　　处：《电力系统保护与控制》2021年第7期17-23,共7页Power System Protection and Control

基　　金：国家重点研发计划项目资助(2018YFB0904100);国家电网公司科技项目资助“面向配电物联网的多维监测与运行辅助决策关键技术研究”(SGTYHT/19-JS-215)。

摘　　要：现代配电网大量分布式电源的接入,使得传统三段式过流保护整定困难。基于光纤通信的差动保护建设成本高,难以大范围应用。5G通信的大带宽、低延时、高可靠特点为配电网差动保护业务提供了一种新的通信方式。通过分析5G通信承载配电网差动保护的技术手段,结合配电网差动保护对通信的技术要求,提出一种基于5G无线通信通道、UDP协议SV采样值报文格式、北斗卫星导航系统授时采样同步法的配电网差动保护方案。该方案在多个5G通信环境进行了验证,差动保护性能满足配电网系统要求。The access of distributed power in a modern distribution network makes it difficult for the traditional three-section current protection to meet the differential protection needs for the laying of optical fiber infrastructures,and its high construction cost makes its wide application difficult.The extreme data rates,ultra-low latency,and ultra-high reliability of 5G communication provide a new communication way for differential protection in a distribution network.This paper analyzes the technologies of 5G communication for differential protection,and the requirements for communication,and then proposes a solution based on a 5G wireless communication channel,SV sampling value message over UDP protocol,and sampling synchronization with a Beidou satellite navigation system.This solution has been verified in multiple 5G communication environments,showing that its differential protection performance meets distribution network requirements.

关 键 词：5G 差动保护 采样同步 通道延时 SV采样值 

分 类 号：TN929.5[电子电信—通信与信息系统] TM773[电子电信—信息与通信工程]