注入式定子接地保护的现场试验、整定和分析  

Field test,setting and analysis of injecting source-based stator grounding protection

作　　者：刘亚东[1] 王增平[1] 苏毅[2] 屠黎明[2] 梁铸[2] 宋小舟[2] 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206 [2]北京四方继保自动化股份有限公司,北京100085

出　　处：《电力自动化设备》2012年第10期150-154,共5页Electric Power Automation Equipment

摘　　要：注入式定子接地保护在国内大型发电机组,尤其是水轮机组中应用越来越多,其与基波零序电压和3次谐波电压保护构成2套不同原理的100%定子接地保护。结合注入式定子接地保护原理,总结了某电厂注入式定子接地保护现场试验过程和调试、整定方案。试验数据和结果表明了注入式定子接地保护的准确性。另外,对试验过程中出现的一些新问题做了分析,并给出了建议。The injecting source-based stator grounding protection is widely used for large generation units,especially hydroelectric generators.It,combined with the fundamental zero-sequence voltage and third harmonic voltage protection,forms two sets of 100% stator grounding protection with different principles.Its field test and setting scheme for a power station is summarized with its protective principle.Test data and results verify its accuracy.Some issues occurred during field test are analyzed and suggestions are given.

关 键 词：水轮机组 定子单相接地 注入式 继电保护 现场试验 整定 定子 接地 

分 类 号：TM772[电气工程—电力系统及自动化]