由雷击引起的浪涌电流引起的配电熔断器的有害操作

C. Smallwood, H. Regina, C. Cook
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引用次数: 0

摘要

配电熔断器因雷击电流浪涌而产生有害操作的可能性是当今讨论较多的主题。本讨论部分是由将避雷器移至变压器油箱以改善变压器过电压保护的做法所驱动的。这种做法的一个后果是,除非采用更大尺寸的熔断器,或者除非使用高浪涌容量的熔断器,否则保护变压器的熔断器发生有害操作的可能性会显著增加。本文第二节描述了一种在各种条件下确定熔断器有害操作概率的方法。第三节描述了一家公用事业公司将避雷器移动到变压器油箱的经验,以及它在高浪涌容量保险丝连接方面的成功经验
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nuisance Operations of Distribution Fuse Links Due to Lightning-Induced Current Surges
The probability of nuisance operations of distribution fuse links due to lightning-induced current surges is the subject of much discussion today. This discussion is driven, in part, by the practice of moving the surge arrester to the transformer tank to improve overvoltage protection of the transformer. One consequence of this practice is that the probability of nuisance operation of the fuse link protecting the transformer increases significantly unless larger fuse-link sizes are employed, or unless high-surge-capacity fuse links are used. Section II of this paper describes a method for determining the probability of nuisance operations of fuse links under various conditions. Section III describes one utility's experience with moving the arrester to the transformer tank, and also its success with high-surge-capacity fuse links
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