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电网技术  2006 

基于S变换模时频矩阵相似度的短时电能质量扰动分类

, PP. 67-71

Keywords: 电能质量,S变换,扰动,模时频矩阵,相似度,分类,噪声鲁棒性

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Abstract:

提出了一种基于S变换模时频矩阵相似度的短时电能质量扰动分类方法。首先,建立各种扰动的标准模时频矩阵,然后计算扰动信号模时频矩阵与标准模时频矩阵的相似度,按照相似度最大的原则将扰动分类。该方法直接利用S变换结果,而不用增加其它算法或变换,原理简单、计算方便。仿真结果显示,该分类方法在不同噪声水平下均能达到满意的分类正确率,是一种有效的短时电能质量扰动分类方法。

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