| 防止主变压器差动保护误动一例 |
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| 引用本文： | 孙茁,李文兴,李国海.防止主变压器差动保护误动一例[J].电力系统保护与控制,2007,35(6):77-79. |
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| 作者姓名： | 孙茁 李文兴 李国海 |
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| 作者单位： | 三门峡供电公司 河南三门峡472000 |
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| 摘 要： | 结合一起未遂事故,详细分析了主变差动保护在桥式接线时的CT二次接线原则和差动保护原理,同时指出了某些情况下系统穿越电流也可能成为差动电流的事实,并对类似的多种危险情况提出了防范措施。
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| 关 键 词： | 差动保护 桥式接线 穿越电流 |
| 文章编号： | 1003-4897(2007)06-0077-03 |
| 修稿时间： | 2006-05-15 |
An example of avoiding the transformer differential protection maloperation |
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| SUN Zhuo, LI Wen-xing, LI Guo-hai.An example of avoiding the transformer differential protection maloperation[J].Power System Protection and Control,2007,35(6):77-79. |
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| Authors: | SUN Zhuo LI Wen-xing LI Guo-hai |
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| Affiliation: | Sanmenxia Power Supply Company, Sanmenxia 472000,China |
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| Abstract: | According to an attempted accident,this paper analyses the CT secondary wiring principle and the differential protection principle of the differential protection in the bridge configuration.At the same time,it points out that in certain situations passed current is likely to become differential current.And the countermeasures to many similar kinds of dangerous situations are proposed. |
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| Keywords: | differential protection bridge configuration passed current |
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