TN系统接地故障保护半径探讨  

Discussion on Earth Fault Protection Radius of TN System

作　　者：陆辉[1] LU Hui(Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

机构地区：[1]浙江省建筑设计研究院,杭州市310006

出　　处：《建筑电气》2017年第8期25-28,共4页Building Electricity

摘　　要：针对TN系统内接地故障保护计算校验的困难,推导接地故障保护半径计算的经验公式;同时结合电压降计算,给出最大保护半径具体数值,供设计人员参考。For the difficulties in calculation check of earth fault protection in TN system, an empirical equation is derived for the purpose of calculation of earth fault protection radius. And a specific value of maximum protection radius is given based on voltage drop calculation for designers＇ reference.

关 键 词：TN系统 接地故障保护 计算校验 供电半径 经验公式 灵敏度校验 电压降 最大供 电距离 

分 类 号：TU852[建筑科学]