Gaoya dianqi泄漏电流是污秽绝缘子在线监测参数，能动态地反映绝缘子表面的放电状态。文中开展了瓷绝缘子人工污秽放电试验，利用Hilbert-Huang变换分析了不同污闪阶段的泄漏电流固有模态函数分量、Hilbert边际谱与时频熵，从时频域及波形细节提取了15个特征量，使用主成分分析法与最小二乘支持向量机分类器对污秽放电状态进行识别。结果表明：起始放电阶段与闪络阶段的泄漏电流固有模态函数分量较多；泄漏电流的Hilbert边际谱上频率主要分布在0~150 Hz、200~250 Hz范围内 ...
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