Breakdown in air gaps with solid insulating barrier under impulse voltage stress
Breakdown in air gaps with solid insulating barrier under impulse voltage stress
复制标题
脉冲电压应力下固体绝缘层气隙的击穿
DOI：
10.2298/fuee0501087t
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Danikas
中科院分区：
文献类型：
--
作者：
F. Topalis;M. Danikas
实心绝缘屏障对气隙冲击强度影响的研究还很少。众所周知，薄绝缘材料会显著增加击穿电压，有时会增加两到三倍。一些研究人员进行了深入的研究，以确定影响击穿脉冲水平的势垒效应参数。阻挡层到高压电极的距离是最重要的参数。电场分布以及绝缘片的形状也很重要。实验研究得出了一些击穿过程的理论模型。本文对这些模型进行了分析和讨论，指出了它们的共同点和不同之处。最后，试图建立一个模型来解释势垒效应，并符合所有的实验和理论分析。
The influence of solid insulating barriers to the impulse strength of air gaps has been investigated by few researchers. It is well known that thin insulating materials increase considerably the breakdown voltage, sometimes two to three times. Some researchers performed thorough investigations for the determination of the parameters of the barrier effect that influence the impulse level for the breakdown. The distance of the barrier from the high voltage electrode is the most important parameter. The field distribution is also important as well as the shape of the insulating sheet. The experimental investigations led to some theoretical models for the breakdown process. This paper analyzes and discusses those models and spots the points where they agree as well as the differences between them. Finally, it attempts to compose a model that sheds light on the barrier effect and complies with all the experimental and theoretical analyses.