交联聚乙烯绝缘电缆的电荷注入和储存

1988. Annual Report., Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1988-10-16 DOI:10.1109/CEIDP.1988.26326

A. Pattullo, D. Das-Gupta, D. Cooper

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引用次数: 5

摘要

作者提出了商业交联聚乙烯(交联聚乙烯)绝缘电力电缆短样品中捕获电荷的测量。在不同的温度和气体环境条件下，对样品的交流和直流电应力进行了电荷注入研究。采用热刺激放电电流(TSDC)、场辅助放电电流(TSDC)和热瞬态电流法三种技术对注入的空间电荷进行了检测。对这些结果进行了比较，并讨论了后者无损监测商用电缆老化过程的可行性。使用TSDC方法可以清楚地看到预应力XLPE绝缘在60℃时存在空间电荷峰。场辅助TSDC说明了在较高温度下强离子传导。

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Charge injection and storage in cross-linked polyethylene insulated cable

The authors present measurements of the trapped charge in short samples of commercial XLPE (cross-linked polyethylene) insulated power cable. Charge injection was investigated for both AC and DC electric stressing of the samples, for various conditions of temperature and gaseous environment. The injected space charge was examined using three techniques: thermally stimulated discharge current (TSDC), field-assisted TSDC, and the thermal transient current method. These results are compared and the viability of the latter, nondestructive technique to monitor the process of aging in commercial cables is discussed. The presence of a space-charge peak at 60 degrees C in prestressed XLPE insulation is clearly seen using the TSDC method. Field-assisted TSDC illustrates strong ionic conduction at higher temperatures.<>

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来源期刊

1988. Annual Report., Conference on Electrical Insulation and Dielectric Phenomena

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