| 串联变压器和应涌流引起差动保护动作的原因及对策 |
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| 引用本文： | 刘建戈.串联变压器和应涌流引起差动保护动作的原因及对策[J].电气技术,2012(10):61-63,69. |
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| 作者姓名： | 刘建戈 |
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| 作者单位： | 江苏省金湖县供电公司,江苏金湖,211600 |
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| 摘 要： | 某厂用变电站在10kV变压器投运过程中多次发生上一级35kV变压器差动保护动作的现象,通过分析变压器励磁流通及和应涌流产生原因和特点,串联变压器和应涌流对电流互感器和差动保护的影响,采取调整差动保护定值和避免电流互感器饱和等方法,避免了串联变压器和应涌流对差动保护的误动作的影响。
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| 关 键 词： | 串联 和应涌流 差动保护 饱和 |
Reasons and Countermeasures of Differential Protection Motion by Series-transformer Sympathetic Inrush |
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| Liu Jiange.Reasons and Countermeasures of Differential Protection Motion by Series-transformer Sympathetic Inrush[J].Electrical Engineering,2012(10):61-63,69. |
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| Authors: | Liu Jiange |
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| Affiliation: | Liu Jiange (JiangSu Jinhu Electric Power Company, Jinhu, JiangSu 211600) |
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| Abstract: | The 35kV transformer differential factory substation operated, analysis of causes and protection acted when the l OkV transformer in A characteristics of transformer magnetizing current and inrush current,and influenced CT and the differential protective by Series-transformer sympathetic inrush. By adjusting the fixed value of differential protection and avoiding CT saturation, and avoid the effect of series-sympathetic inrush of transformer differential nroteetion |
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| Keywords: | series sympathetic inrush differential protection saturation |
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