| 电力变压器差动保护励磁涌流识别方法比较研究 |
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| 引用本文： | 李家坤.电力变压器差动保护励磁涌流识别方法比较研究[J].广东水利电力职业技术学院学报,2009,7(2). |
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| 作者姓名： | 李家坤 |
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| 作者单位： | 长江工程职业技术学院电力工程系,湖北,武汉,430212 |
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| 摘 要： | 差动保护作为电力变压器主保护之一,要求具有良好的可靠性,而励磁涌流的识别一直是变压器差动保护中的关键问题。目前的差动保护在励磁涌流出现时,常常发生误动作,差动保护不能很好地满足变压器保护的需要。针对目前国内外学者提出的励磁涌流识别原理和方法,对各种识别方案的原理、优缺点和应用情况进行详细分析和评价,指出今后的发展方向。
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| 关 键 词： | 电力变压器 差动保护 励磁涌流 内部故障 |
Comparisons and Analysis of Some Methods for Checking Magnetizing Inrush Current in Power Transformer Differential Protection |
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| LI Jia-kun.Comparisons and Analysis of Some Methods for Checking Magnetizing Inrush Current in Power Transformer Differential Protection[J].Journal of Guangdong Technical College of Water Resources and Electric Engineering,2009,7(2). |
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| Authors: | LI Jia-kun |
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| Affiliation: | LI Jia-kun(Changjiang Engineering Vocational College; Wuhan 430212; China); |
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| Abstract: | As one of power transformer main protections,differ ential protection has preferable reliability.Identification of magnetizing inrush current has been a key problem of the power transformer.As power transformer is a nonlinear time-variant system,disoperation comes forth frequently when magnetizing inrush current occurs.Thus,differential protection fails to meet the need of transformer protection.Based on the schemes of identification of magnetizing inrush current proposed by scholars from home and abroad,th... |
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| Keywords: | power transformer differential protection magnetizing inrush current internal faults |
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