| 一起二次回路两点接地引起母线保护误动的事故分析 |
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| 引用本文： | 邱涛,王攀峰,张克元,刘星. 一起二次回路两点接地引起母线保护误动的事故分析[J]. 电力系统保护与控制, 2008, 36(24): 110-112 |
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| 作者姓名： | 邱涛 王攀峰 张克元 刘星 |
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| 作者单位： | 1.连云港供电公司，江苏 连云港 222000;2.许继电气公司技术中心，河南 许昌 461000 |
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| 摘 要： | 二次回路两点接地是引起保护装置不正确动作的原因之一，但二次回路两点接地引起母线差动保护误动却发生较少，对一起二次回路两点接地引起母线差动保护误动事故进行了详细分析，指出了引起事故的根本原因和主要因素，并提出了相关的防范措施。
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| 关 键 词： | 二次回路；两点接地；母线；差动保护；事故 |
Analysis of two groundings in secondary circuit arosing maloperation of busbar protection |
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| QIU Tao,WANG Pan-feng,ZHANG Ke-yuan,LIU Xing. Analysis of two groundings in secondary circuit arosing maloperation of busbar protection[J]. Power System Protection and Control, 2008, 36(24): 110-112 |
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| Authors: | QIU Tao WANG Pan-feng ZHANG Ke-yuan LIU Xing |
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| Affiliation: | QIU Tao1,WANG Pan-feng2,ZHANG Ke-yuan2,LIU Xing2 (1.Lianyungang Power Supply Company,Lianyungang 222000,China,2.Technology Center,XJ Electrical Company,Xuchang 461000,China) |
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| Abstract: | There are two groundings in secondary circuit, which is one of the reasons that arose the maloperation of protective relay. But the maloperation of busbar difference protection is less than the others. The paper analyzes an accident that two groundings arose the maloperation of busbar protection,points out the essential reason and the prime reason of the accident. At the same time, the anti-accident medthods are brought forword. |
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| Keywords: | secondary circuit two groundings busbar difference protection accident |
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