基于模糊聚类的XLPE电缆随机脉冲干扰抑制方法研究

Suppression of Stochastic Pulses Interference in XLPE Cables Based on Fuzzy Clustering

为去除XLPE电缆局部放电现场检测中的随机脉冲干扰,采用等效时频法提取脉冲特征,对特征进行自适应模糊聚类,以相位集中度为指标区分局放与随机干扰。对现场数据分析处理的结果表明,该方法能够有效去除信号中的随机脉冲干扰,为评估XLPE电缆的绝缘状态提供了较好的理论和实践依据。

To suppress the stochastic pulse interference in XLPE Cables, this paper uses equivalent time-frequency method to extract pulse feature values, adaptive fuzzy clustering to classify pulses, phase concentration as an index to distinguish PD （ partial dischange } and stochastic pulses. Analysis results of on-site data show that this method can effectively suppress stochastic pulse interference in the PD signal, providing a useful theoretical and practical basis to assess the state of XLPE cable insulation.