| 电流二次回路两点接地造成母差异常告警的处理与分析 |
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| 引用本文： | 曹东,周程. 电流二次回路两点接地造成母差异常告警的处理与分析[J]. 冶金动力, 2014, 0(10): 12-13 |
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| 作者姓名： | 曹东 周程 |
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| 作者单位： | 国网安徽省电力公司马鞍山供电公司,安徽马鞍山243000 |
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| 摘 要： | 母线保护是变电站继电保护系统中的一个重要的组成元件,但由于现场接线错误或由于电流回路的虚接地造成CT二次回路两点或多点接地的现象时有发生。通过一次异常事故处理,详细分析了两点接地的原理以及危害。并提出检查两点接地的方法。
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| 关 键 词： | 母线保护 电流回路 两点接地 查找处理 |
Treatment and Analysis of Abnormal Alarm of Busbar Differential Caused by Two-point Grounding of CT Secondary Loop |
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| CAO Dong,ZHOU Cheng. Treatment and Analysis of Abnormal Alarm of Busbar Differential Caused by Two-point Grounding of CT Secondary Loop[J]. Metallurgical Power, 2014, 0(10): 12-13 |
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| Authors: | CAO Dong ZHOU Cheng |
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| Affiliation: | (Maanshan Power Supply Company, Maanshan, Anhui 243000, China) |
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| Abstract: | Busbar protection is an important part in the relaying protection system of a transformer substation, but field wiring mistakes or false grounding of current circuits often lead to two-point or multi-point grounding of CT secondary loops. Through handling of an abnormal failure, the mechanism and harm of two-point grounding are analyzed in detail and method for checking two-point grounding is provided. |
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| Keywords: | busbar protection current circuit two-point grounding search and treat-ment |
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