雷电对配网自动化馈线终端的影响分析  

Analysis of Lightning Impact on Automatic Feeder Terminal Unit of Distribution Network

作　　者：冼冀 XIAN Ji(Maoming Gaozhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Gaozhou 525200,China)

机构地区：[1]广东电网有限责任公司茂名高州供电局,广东高州525200

出　　处：《电工技术》2023年第24期90-92,96,共4页Electric Engineering

摘　　要：雷电严重威胁到配网自动化馈线终端的稳定、可靠运行,导致配网自动化开关误动、拒动或“三遥”失效频繁发生。详述感应雷过电压产生机理,分析配网自动化馈线终端在感应雷过电压下的损坏形式和失效机理,结合一次设备防雷措施,在配网自动化馈线终端原有的感应雷过电压防护电路前端多增一级防护电路,降低感应雷过电压的影响,有效保护配网自动化馈线终端,对提升配网自动化开关的运行可靠性有重大参考价值。Lightning seriously threatens stable and reliable operation of automation feeder terminal uints of distribution network,which leads to maloperation,operation failure,or"three remote"failures of distribution network automation switches.This paper describes in detail the mechanism of induced lightning overvoltage,analyzes the damage forms and failure mechanisms of distribution network automation feeder terminal units that are caused by induced lightning overvoltage,and combines primary equipment lightning protection measures of adding a level of protection circuit to the front end of distribution network automation feeder terminal units to reduce the impact of induced lightning overvoltage and effectively protect distribution network automatic feeder terminal uints.The paper is expected to provide certain reference for improving reliable operation of distribution network automatic switches.

关 键 词：感应雷过电压 自动化馈线终端 配网 

分 类 号：TM56[电气工程—电器]