小电流接地选线系统技术分析  

Technical Analysis of Small Current Grounding Line Selection System

作　　者：曹艳 李洪 CAO Yan;LI Hong(State Grid Hubei Electric Power Company Huangshi Power Supply Company,Huangshi 435000,China)

机构地区：[1]国网湖北省电力有限公司黄石供电公司,黄石435000

出　　处：《价值工程》2023年第32期35-38,共4页Value Engineering

摘　　要：文章主要介绍了中性点不接地和中性点经消弧线圈接地两种接地方式。同时介绍了国网黄石供电公司开展零序电流互感器(CT)或测保装置以及接地选线装置在运和运行情况,对现有的选线方法和零序CT做简单描述和比较,提出有关问题以及整改建议,保证零序CT或测保装置以及接地选线装置真正发挥实效。The article mainly introduces two grounding methods:ungrounded neutral point and grounded neutral point through arc suppression coil.At the same time,it introduced the operation and operation of zero sequence current transformers(CT)or measurement and protection devices,as well as grounding line selection devices carried out by State Grid Huangshi Power Supply Company.It briefly described and compared the existing line selection methods and zero sequence CT,proposed relevant problems and rectification suggestions,and ensured that the zero sequence CT or measurement and protection devices and grounding line selection devices were truly effective.

关 键 词：小电流接地选线系统 小电流接地方式 单相接地 零序电流互感器 

分 类 号：TM933[电气工程—电力电子与电力传动]