XLPE电力电缆局部放电信号识别法及其关键技术

Partial Discharge Signal Identification Methods and Key Technique of XLPE Power Cables

分析了当今交联聚乙烯(cross-linked polyethylene,XLPE)电力电缆局部放电信号识别的几种主要方法的优缺点及其适用条件,以及相位分辨数据统计法的局限性.并对基于等效带宽-等效时间长度的簇分离方法的应用有效性的关键技术进行了剖析,对该方法的进一步研究及局部放电在线测量的应用提出了建议.

Several present signal identification techniques for partial discharge signal （PDs） of XLPE cables are analyzed, namely, their advantages and disadvantages and their application range. Moreover, limitations of the phase-based statistic technique are interpreted in detail. Cluster classification technique based on the equivalent bandwidth-equivalent time length（W-T） is likely to develop in a desirable manner for PDs identification. The important aspects of this technique are analyzed, which may offer reference for further study of this technique and for the on-line PD measurement.