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.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第10期150-154,共5页
Electric Power Automation Equipment
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
hydroelectric generators
stator single-phase grounding fault
injecting source
relay protection
field test
setting
stators
electric grounding
