| 一起直流一点接地误跳500kV线路原因分析 |
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| 引用本文： | 张金枝,李智.一起直流一点接地误跳500kV线路原因分析[J].安徽电气工程职业技术学院学报,2011,16(1):1-4. |
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| 作者姓名： | 张金枝 李智 |
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| 作者单位： | 芜湖供电公司,安徽,芜湖,241000 |
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| 摘 要： | 文中介绍了某500kV变电站在处理110V直流系统一点接地故障时发生一条500kV线路无故障跳闸过程;通过分析发现直流系统电容电流在一点接地时有充放电现象,分析了直流一点接地时造成保护动作的原因,并从变电运行的角度提出了此类故障处理策略。
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| 关 键 词： | 变电站 直流一点接地 继电器 跳闸 原因分析 |
The Analysis of a 500kV Line Trouble-free Trip Caused by the DC One-point Grounding |
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| ZHANG Jin-zhi,LI Zhi.The Analysis of a 500kV Line Trouble-free Trip Caused by the DC One-point Grounding[J].Journal of Anhui Electrical Engineering Professional Technique College,2011,16(1):1-4. |
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| Authors: | ZHANG Jin-zhi LI Zhi |
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| Affiliation: | (Wuhu Power Supply Company,Wuhu 241000,China) |
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| Abstract: | The paper introduces the dealing of an 110V DC grounding fault at one-point which causes a 500kV line trouble-free trip in a 500kV substation.Through in-depth analysis,it′s found that there is charging and discharging phenomena when the DC system capacitive current grounding at one-point.The paper describes the reason of the DC one-point grounding what causes protection action,and proposes the treatment strategy of such fault from the angle of substation running. |
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| Keywords: | transformer substation DC grounding at one-point relay trip analysis of causes |
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