浙江电力Issue(11)：66-68,72,4.
一起220 kV主变差动保护异常跳闸的分析
Analysis on an Abnormal Tripping of Differential Protection of 220 kV Main Transformer
吴文联 1刘岩水 2徐建平 3黄腾 1黄涛1
作者信息
- 1. 国网浙江省电力公司杭州供电公司，杭州 310016
- 2. 紧水滩发电厂，浙江 丽水 323000
- 3. 国网浙江省电力公司，杭州 310007
- 折叠
摘要
Abstract
By field detection and analysis on differential current wave after abnormal tripping of differential protection RCS978 of 220 kV main transformer, it is founded that there is two-point grounding in differential current circuit, which results in misoperation of differential protection in case of external interference. The paper expounds harm of two-point grounding of current circuit to relaying protection system and hence pro-vides reference for handling and analysis of abnormal tripping of differential protection of main transformer, especially protection misoperation accident caused by large-current testing terminals.关键词
差动保护/两点接地/干扰分析Key words
differential protection/two-point grounding/interference analysis分类
信息技术与安全科学引用本文复制引用
吴文联,刘岩水,徐建平,黄腾,黄涛..一起220 kV主变差动保护异常跳闸的分析[J].浙江电力,2014,(11):66-68,72,4.
