小电阻接地系统中接地变和小电阻选型研究  

Research on Selection of Grounding Transformer and Low Resistance in Low Resistance Grounding System

作　　者：高力 GAO Li(Zhifang Engineering&Technology Co.,Ltd.,Shanghai 200082,China)

机构地区：[1]智方工程设计有限公司,上海200082

出　　处：《电力勘测设计》2020年第8期23-29,共7页Electric Power Survey & Design

摘　　要：城市的发展使得中性点经小电阻接地方式逐步推广,接地电阻和接地变的选型就显得尤为重要。重点对中性点经小电阻接地方式中单相接地电容电流计算、小电阻选型、接地变选型进行研究。并对接地设备接入系统方案进行分析总结与提出观点。The development of the city makes the neutral point gradually promoted by the low resistance grounding method,and the selection of the grounding resistance and the grounding change is particularly important.This paper focuses on the study of single-phase grounding capacitor current calculation,low resistance selection and grounding variation type in neutral point via low resistance grounding method,and analyzes and summarizes the grounding equipment access system scheme.

关 键 词：小电阻接地 电容电流 接地变 选型 接入系统方案 

分 类 号：TM862[电气工程—高电压与绝缘技术]