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高压电器  2015 

局部放电的极坐标谱图及模式识别

DOI: 10.13296/j.1001-1609.hva.2015.07.019, PP. 97-101

Keywords: 局部放电,三角函数,放电脉冲相位分布,极坐标谱图,模式识别,人工神经网络,电缆

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Abstract:

为了对电缆的局部放电试验结果进行分析,文中提出了一种利用放电信号的脉冲幅值q与相位角φ的余弦和正弦函数乘积绘制极坐标谱图的方法,指出了该谱图的特点。结合3种电缆接头放电模型的试验结果,分析了不同放电类型的谱图特征。提取了极坐标谱图的若干有关分布和对称的特征信息,形成了16维的特征向量,用人工神经网络方法进行了放电的模式识别研究。

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