| 一起CT饱和引起越级跳闸的故障分析 |
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| 引用本文： | 丁晓飞,王蕊,于文华. 一起CT饱和引起越级跳闸的故障分析[J]. 华中电力, 2012, 25(2): 15-16 |
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| 作者姓名： | 丁晓飞 王蕊 于文华 |
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| 作者单位： | 1. 河南省电力公司濮阳供电公司,河南濮阳457000
2. 河南思达高科技股份有限公司,河南郑州450000 |
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| 摘 要： | 某110kV变电站中一条35kV线路发生永久性故障,保护装置在第一次正确动作并重合后,未再次正确动作,造成主变保护越级跳闸,并最终导致35kV母线失压。文中深入探讨了保护拒动的原因,阐述了事故检查处理过程,对保护装置在运行过程中暴露出的弱点进行了系统的分析,并对此提出具体解决方案。
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| 关 键 词： | CT饱和 越级跳闸 故障分析 |
Fault Analysis of Override Trip Accident Caused by CT Saturation |
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| DING Xiao-fei,WANG Rui and YU Wen-hua. Fault Analysis of Override Trip Accident Caused by CT Saturation[J]. Central China Electric Power, 2012, 25(2): 15-16 |
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| Authors: | DING Xiao-fei WANG Rui YU Wen-hua |
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| Affiliation: | Henan Puyang Power Supply Company,Henan Puyang Power Supply Company,Henan Star Hi-Tech Co.,Ltd. |
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| Abstract: | A permanent fault of 35kV power line in a certain 110kV power station is occurred,the relay protection device didn’t act correctly anymore after its first accurate act and reclose,caused the override trip of transformer protection,finally caused the 35kV bus voltage failure.This paper studies the reason of protection device miss trip,describes the process of fault treatment,analyses the weakness of the relay protection device in operation,then puts forward solution for solving the weakness. |
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| Keywords: | CT saturation override trip fault analysis |
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