直流应力下电缆硫化物树生长诊断的电学特性

IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena Pub Date : 1997-10-19 DOI:10.1109/CEIDP.1997.634616

P. Anelli, A. Motori, I. Ghinello, G. Mazzanti, G. Montanari

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引用次数: 1

摘要

将电缆模型浸泡在含硫化氢的海水中，并以两种电压水平供电，在不同老化时间下测量其电性能，即交流电强度和直流电导率。为了有利于电化学或硫化树的生长，研究了测试条件。电缆型号有铜导体和聚乙烯绝缘。结果表明，电场强度和电导率随树木生长时间显著变化，为电缆退化诊断提供了工具。

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Electrical properties for diagnosis of sulfide-tree growth in cables under dc stress

Electrical properties, that is, AC electric strength and DC conductivity, are measured at different aging times in cable models immersed in sea water with hydrogen sulfide and supplied at two voltage levels. Test conditions are studied in order to favour growth of electrochemical, or sulfide, trees. Cable models have copper conductor and polyethylene insulation. It is shown that both electric strength and conductivity significantly vary with tree-growth time, providing tools for cable degradation diagnosis.

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IEEE 1997 Annual Report Conference on Electrical Insulation and Dielectric Phenomena

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