Dielectric and partial discharge investigations on aged medium voltage underground power cables

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI:10.1109/CEIDP.2015.7352119

Saravanakumar Arumugam, M. Bogaczyk, S. Gorchakov, R. Kozakov, K. Weltmann

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引用次数: 5

Abstract

This paper investigates on dielectric and partial discharge (PD) condition of aged XLPE insulated, medium voltage underground cables rated 20 kV, acquired on-site. The extracted samples have suffered PD and failed at different instants. First, the cable samples are grouped as per their timeline of failure. Following this, the dielectric integrity of the cable samples are assessed through modern diagnostic test methods over wide frequency. This implies involving dielectric response analysis and PD measurements respectively. The dielectric integrity of chosen samples are ascertained through frequency dependent dielectric properties. The PD measurements include recording the PD level or apparent charge level (QIEC) of chosen samples and analyzing their respective phase resolved PD pattern. Following this, the information of real time PD signals are transformed to frequency domain and analyzed. Altogether, the findings from all these measurements collectively describe the characteristics of chosen cable samples. In conclusion, it is believed that such an attempt might provide a deep insight in improving the present interpretation strategies.

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老化中压地下电力电缆的介电和局部放电研究

本文对现场采集的20kv交联聚乙烯绝缘老化地下中压电缆的介电和局部放电情况进行了研究。所提取的样品受到PD的影响，并在不同的时刻失效。首先，电缆样本按照它们的故障时间线进行分组。随后，通过现代诊断测试方法在宽频率上评估电缆样品的介电完整性。这意味着分别涉及介电响应分析和PD测量。通过频率相关介电特性确定所选样品的介电完整性。PD测量包括记录所选样品的PD水平或视电荷水平(QIEC)，并分析其各自的相分辨PD模式。然后，将实时PD信号的信息变换到频域进行分析。总之，所有这些测量结果共同描述了所选电缆样品的特性。总之，相信这种尝试可以为改进目前的口译策略提供深刻的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)

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