浅析选择性定子单相接地保护  

A Fundamental Research on Stator Single-phase Earth Protection Schemes

作　　者：李振强[1] 吕艳萍[1] 张彦昌[1] 

机构地区：[1]武汉大学,430072

出　　处：《电机技术》2007年第2期36-38,共3页Electrical Machinery Technology

摘　　要：在分析发电机定子绕组单相接地故障特点的基础上,简述常见的定子单相接地保护方案,详细分析三种具有选择性的定子单相接地保护的原理和优缺点。指出目前几种具有选择性的定子单相接地保护方案存在的问题和对以后的研究展望。On the basis of analyzing the characteristics of generator stator winding single-phase earth fault, the thesis simply presents some normal generator stator singlephase earth fault protection schemes, analyzes detailedly the principle, merits and drawbacks of three selective generator stator single-phase earth fault protection schemes in practice （Homopolar power direction protection, selective traveling wave protection stator earth protection based on wavelet transform） and finally points out the problems existing in present selective generator stator single-phase earth fault protection as well as the direction of further study.

关 键 词：定子单相接地 选择性 保护方案 

分 类 号：TM862[电气工程—高电压与绝缘技术]