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电网技术  2006 

基于小波与分形理论的电力设备局部放电类型识别

, PP. 76-80

Keywords: 局部放电,特征提取,分形理论,模式识别,高电压绝缘技术

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Abstract:

根据小波理论建立了表征局部放电脉冲信号的三维时频谱图,该三维谱图综合反映了局放脉冲信号的3个基本特征时间分量、频率分量和放电能量的分布。采用了分形理论从所建立的三维时频谱图中提取放电特征,并构成识别特征量,采用误差反传神经网络对局部放电信号的类型进行模式识别。试验结果表明,该方法可有效区分局部放电的类型。

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