| YN．d11变压器差动保护CT极性接错的相量分析 |
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| 引用本文： | 黎廷广.YN．d11变压器差动保护CT极性接错的相量分析[J].广东科技,2008(6):110-112. |
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| 作者姓名： | 黎廷广 |
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| 作者单位： | 广东电网公司茂名供电局,广东,茂名,525000 |
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| 摘 要： | 本文针对YNd11接线方式的双绕组电力变压器，差动保护电流回路容易出现极性标示错误或外接线接错极性的现象，分析并概括性地描述差动保护CT正确接线与个别相CT不正确接线对应六角相量图中，电流相量之间的幅值和相位特点及其规律，提出差动保护电流回路极性标示错误或外接线接错极性的简捷识别和查找方法。
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| 关 键 词： | 变压器 差动保护 CT极性 相量分析 时针 |
Vector Analysis of CT Polarity Error on The Transformer Differential Protects |
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| Abstract: | In order to correct the CT polarity error which occured regularly in differential protection for the transformer of YNd11 connection style,this artical has described and analyzed the characteristics and regularity of vector graphics in miscellaneous CT wiring.A simple recognition and trouble shooting method for the error is also proposed on this paper. |
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| Keywords: | transformer differential protection CT polarity vector analysis clock |
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