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基于支持向量机和有限元分析的变压器绕组变形分类方法

DOI: 10.13334/j.0258-8013.pcsee.2015.22.012, PP. 5778-5786

Keywords: 变压器,绕组变形,有限元方法,支持向量机

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Abstract:

电力变压器绕组变形导致内部匝间故障的事故率已升至首位,成为影响变压器安全稳定运行的重要因素。变压器运行过程中绕组变形导致绕组漏磁场发生变化,进而引起漏感参数发生变化。该文根据这一基本特征,研究绕组参数和变形程度之间的关系,利用有限元模型计算变压器的磁场能量和电感参数,采用工程计算法对该模型的正确性进行校验,继而提出利用支持向量机模型对绕组变形进行分类,并通过优化的网格搜索法对参数进行优化。仿真结果表明,所提方法具有较高的分类准确度,适用于变压器绕组变形的在线监测。

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