交流电压加开关脉冲激励15kv EPR电缆的电气老化

L. Cao, A. Zanwar, B. Pushpanathan, S. Grzybowski
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引用次数: 9

摘要

近几十年来,人们对聚合物电力电缆的老化现象进行了广泛的研究。尽管对单一老化机理的研究取得了很大成就,但对索在多应力条件下的老化现象了解甚少。研究了15kv乙丙橡胶(EPR)电力电缆在潮湿条件下开关脉冲加交流电压叠加老化的电老化问题。实验旨在更好地了解湿态下EPR电缆绝缘的电老化现象。它还有助于评估在这种情况下使用的EPR电缆的可靠性。
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Electrical aging of 15 kV EPR cable energized by AC voltage with switching impulses superimposed
Aging phenomenon of polymeric power cables have been extensively studied during last several decades. Despite the great achievement in single aging mechanism, much less was known about the aging phenomenon of cables under multi-stress conditions. This study focused on the electrical aging of 15 kV Ethylene Propylene Rubber (EPR) power cables aged by switching impulses superimposed with ac voltage in wet condition. The experiments aimed at better understanding of the electrical aging phenomenon of EPR cable insulation in wet condition. It also helped to assess the reliability of EPR cable used under such circumstances.
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