对地泄漏电流的调研与分析  

Investigation and Analysis of Earth Leakage Current

作　　者：李平 袁松林 郑凯 LI Ping;YUAN Songlin;ZHENG Kai(The Architectural Design&Research Institute of Zhejiang University Co.,Ltd.,Hangzhou 310028,China)

机构地区：[1]浙江大学建筑设计研究院有限公司,杭州市310028

出　　处：《建筑电气》2023年第9期4-8,共5页Building Electricity

基　　金：浙江大学建筑设计研究院有限公司科研项目,项目名称:民用建筑物配电系统自然泄露电流情况研究。

摘　　要：线路正常工作时的对地泄漏电流是剩余电流动作保护装置和剩余电流式电气火灾监控系统整定动作值或报警值的参考数据,针对目前对地泄漏电流参考数据不足的问题,提出对地泄漏电流的调研方法,以13座建筑作为研究对象进行调研,选取其中典型的5座建筑进行分析。调研与分析结果显示,对地泄漏电流大于500 mA的比例高达85%,未发现对地泄漏电流的大小与线路敷设长度、计算电流等参数的相关性。Earth leakage current during the normal operation of the line is the reference data of setting operation value or alarm value of the residual current operated protective device and the residual‑current electrical fire monitoring system.However,the problem is that the existing reference data of earth leakage current is not sufficient.In order to solve this problem,an investigation method of earth leakage current was put forward,i.e.,13 buildings are taken as the research objects of this investigation and 5 typical buildings are selected from them and analyzed.The results of investigation and analysis show that the proportion of the earth leakage current higher than 500mA is 85%and the relevance between the magnitude of earth leakage current and such parameters as line laying length and calculated current is not found.

关 键 词：对地泄漏电流 剩余电流 剩余电流动作保护装置 剩余动作电流 剩余不动作电流 电气火灾监控系统 线路敷设长度 线路计算电流 

分 类 号：TU852[建筑科学]