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电网技术  2015 

一种发电机故障放电信号特征实时在线自动识别方法及其应用

DOI: 10.13335/j.1000-3673.pst.2015.02.038, PP. 543-549

Keywords: 发电机,故障放电,实时在线,特征自动识别,状态监测

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Abstract:

对发电机故障放电信号特征进行自动识别时,实现方法要求具有较高的可靠性与快速性。为达到这些要求,首先提出一种高可靠的脉冲提取方法,能够更为准确完整地提取脉冲信号,通过仿真方式对该方法进行了研究,并使用现场实测信号验证了该方法的优越性。在该方法基础上,提出了脉冲分类参数的快速计算方法,在进行脉冲提取的同时完成脉冲分类参数的计算,使用实测信号验证该方法的有效性。在检测脉冲的存在并对脉冲进行高可靠提取的同时,获取脉冲信号的分类特征参数,而且计算速度快,将其称为脉冲特征快速自动识别技术。该技术已成功运用在多台水轮发电机上,在实际应用中取得了良好的效果。

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