Assessment of Thermally Aged Cross Linked Polyethylene Insulation Under High Impulse Voltage Stress

2019 International Conference on High Voltage Engineering and Technology (ICHVET) Pub Date : 2019-02-01 DOI:10.1109/ICHVET.2019.8724325

S. Nayak, S. Karmakar

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引用次数: 1

Abstract

In high voltage cables, various types of of solid, fluid and gaseous materials are utilized for insulation reason to protect high voltage (HV) power equipement. Service cables are exposed to different stresses i.e. natural aging, electrical stress, mechanical stress, thermal stress etc. which are main causes of reduction of dielectric strength of insulation that leads to cable failure. Due to its high dielectric strength, Cross Linked Polyethylene (XLPE) is used in most of the high voltage (HV) cables for insulation purpose. The reason behind most of the HV cable unable to carry bulk power due to internal discharge happen in inner most parts of the insulation. In order to get advance information about the health of HV cables periodic condition monitoring of XLPE insulation cable is needed. In this work, chemical and electrical properties of thermally aged cross-linked polyethylene (XLPE) insulation was examined, by means of Fourier transform infrared (FTIR) spectroscopy and impulse breakdown voltage measurement respectively.

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高冲击电压应力下热老化交联聚乙烯绝缘的评价

在高压电缆中，由于绝缘原因，使用各种类型的固体、流体和气体材料来保护高压电力设备。业务电缆暴露在不同的应力下，即自然老化、电应力、机械应力、热应力等，这些应力是导致电缆绝缘介电强度降低的主要原因，导致电缆失效。交联聚乙烯(XLPE)具有较高的介电强度，在大多数高压电缆中用作绝缘材料。高压电缆之所以不能承载大容量电力，主要是由于内部放电发生在绝缘的内部。为了提前掌握高压电缆的健康状况，需要对交联聚乙烯绝缘电缆进行定期状态监测。本文采用傅里叶变换红外光谱(FTIR)和脉冲击穿电压测量方法，研究了热老化交联聚乙烯(XLPE)绝缘材料的化学和电学性能。

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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2019 International Conference on High Voltage Engineering and Technology (ICHVET)

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