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电压暂降分类特征可比性、相关性及马氏距离分类法

DOI: 10.13334/j.0258-8013.pcsee.2015.06.002, PP. 1299-1305

Keywords: 电压暂降分类,分类特征,可比性,相关性,费希尔准则,线性判别,马氏距离

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Abstract:

分类特征选取和分类方法是电压暂降分类的基础。从分类学原理出发,针对不同分类目标的电压暂降分类,引入电压暂降分类特征概念,研究同类和异类暂降分类特征的可比性,提出基于费希尔判别准则的分类特征线性判别和分类特征选取方法;考虑同类和异类暂降间分类特征相关程度的不同,提出基于马氏距离的电压暂降分类方法。以短路故障、变压器空载激磁和大型感应电动机起动引起的电压暂降为分类目标,对理论样本和不同情况下实测数据的分析证明该方法正确性、可行性和良好的噪声鲁棒性,并证明,在分类过程中考虑特征属性可有效提升其分类性能。

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