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高压电器  2015 

XLPE电力电缆典型缺陷局部放电测量与分析

, PP. 44-50

Keywords: XLPE,缺陷模型,局部放电,PRPD谱图,脉冲波形,特征分析

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Abstract:

为了研究XLPE电力电缆典型缺陷的放电特征,在试验室条件下设计了3种放电物理模型,采用脉冲电流法对其局部放电信号进行测量。对比研究了3种典型缺陷模型的局部放电特征,分析了电压幅值对放电谱图、放电波形、放电频率和中心相位分布的影响关系。试验结果表明,相同条件下同一缺陷模型放电稳定、重复性好;不同缺陷类型其放电发展过程不尽相同,呈现的PRPD谱图、单个脉冲波形及相位分布趋势图区别明显。这些特征为进一步进行放电类型的模式识别及局部放电机理研究提供了试验依据。

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