Space charge analysis of modified and unmodified XLPE model-cables under different electric fields and temperatures

2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) Pub Date : 2015-12-17 DOI:10.1109/CEIDP.2015.7352121

I. M. Zimmerling, I. Tsekmes, P. Morshuis, J. Smit, T. Person, T. Geussens

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引用次数: 4

Abstract

The introduction of HVDC links into the power grid have made polymeric cables for DC transmission a subject of great interest. XLPE is a widely used insulation material for HVDC cables. However, dealing with space charge accumulation in XLPE cables still remains a challenge. New insulating materials offer new possibilities facing these challenges, if their properties are well understood. Two model-cables with equal dimensions but different XLPE insulation are investigated in this study. One material is “conventional” XLPE, which is normally used for AC-cables, while the other is treated to introduce additional functionality into the polymer composition. The cables were exposed to a number of different combinations of applied electric field and isothermal temperature conditions, while space charge measurements on the samples were performed, using the PEA-method. The slight modification of the polymer composition of XLPE leads to considerable changes in space charge development. The modification influences injection, transport and recombination of charges in the sample.

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改进和未改进的XLPE模型电缆在不同电场和温度下的空间电荷分析

高压直流输电线路的引入使得用于直流输电的聚合物电缆成为人们非常感兴趣的课题。交联聚乙烯是一种广泛应用于高压直流电缆的绝缘材料。然而，处理XLPE电缆中的空间电荷积累仍然是一个挑战。新的绝缘材料提供了新的可能性，面对这些挑战，如果他们的性质被很好地理解。本文研究了两种尺寸相等但交联聚乙烯绝缘不同的模型电缆。一种材料是“传统的”XLPE，通常用于交流电缆，而另一种材料经过处理，在聚合物成分中引入了额外的功能。电缆暴露在多种不同的外加电场和等温温度条件下，同时使用pea方法对样品进行空间电荷测量。对XLPE的聚合物组成进行微小的修饰，就会导致空间电荷发展发生相当大的变化。改性影响样品中电荷的注入、输运和复合。

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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