云南电力技术
雲南電力技術
운남전력기술
YUNNAN ELECTRIC POWER
2014年
6期
124-127
,共4页
同步电机%差动保护%引黄工程
同步電機%差動保護%引黃工程
동보전궤%차동보호%인황공정
synchronous motor%differential protection%YRDP
介绍引黄工程同步电动机所用SR469电动机管理继电器纵差保护近年来频繁误动作的情况，从纵差保护所用CT、二次接线、定值调整、保护配置和继电器升级等五个方面分析了保护误动作原因并提出了改进方案。
介紹引黃工程同步電動機所用SR469電動機管理繼電器縱差保護近年來頻繁誤動作的情況，從縱差保護所用CT、二次接線、定值調整、保護配置和繼電器升級等五箇方麵分析瞭保護誤動作原因併提齣瞭改進方案。
개소인황공정동보전동궤소용SR469전동궤관리계전기종차보호근년래빈번오동작적정황，종종차보호소용CT、이차접선、정치조정、보호배치화계전기승급등오개방면분석료보호오동작원인병제출료개진방안。
This paper mainly focuses on the frequent mis-operation of differential protection of SR469 motor management relay which is used for synchronous motor, Wanjiazhai YRDP.Analysis is done from 5 aspects.Firstly, from the longitudinal CT used;secondly, from the wiring of secondary circuit;thirdly, from relay setting;fourthly, from the protection configuration and lastly from the relay upgrading.Improving measures are presented based on the analysis done.
