宁夏电力Issue(4)：30-33,4.DOI:10.3969/j.issn.1672-3643.2016.04.005
两起220kV变电站主变压器跳闸故障分析
Failure analysis on two cases of main transformer trip in 220 kV substation
吴旭涛 1邢琳2
作者信息
- 1. 国网宁夏电力公司电力科学研究院，宁夏 银川 750011
- 2. 国网河北省电力公司经济技术研究院，河北 石家庄 056002
- 折叠
摘要
Abstract
Aiming at two cases of main transformer trip fault continuously happened in a 220 kV substation, according to failure informations and relevant test results, finds out the causes of main transformer trip, puts forward the measures such as to develop partial discharge detection before the commission of resin-casting type current transformer, and to generalize the grounding transfer technology in non- effectively neutral grounded system. The application result shows that the improving measure can effectively prevent main transformer trip fault happening due to main insulation breakdown of resin-casting type current transformer.关键词
主变压器/跳闸故障/浇注式电流互感器/局部放电/绝缘击穿/中性点非有效接地系统/接地转移技术Key words
main transformer/trip fault/resin-casting type current transformer/partial discharge/insulation breakdown/non-effectively neutral grounded system/grounding transfer technology分类
信息技术与安全科学引用本文复制引用
吴旭涛,邢琳..两起220kV变电站主变压器跳闸故障分析[J].宁夏电力,2016,(4):30-33,4.
