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首页> 外文期刊>Electrical engineering in Japan >Aerial Flashover Caused by Surface Flashover Generated from Microscopic Pores of Insulating Solid
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Aerial Flashover Caused by Surface Flashover Generated from Microscopic Pores of Insulating Solid

机译：绝缘固体细孔产生的表面闪络引起的空中闪络

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摘要

This paper studies the possibility of an aerial flashover between a coil conductor and the casing in a rotating machine at voltages below Paschen's voltage even when sufficient insulation distance has been provided. It might be considered that partial surface flashover generated from microscopic pores of a solid insulator generates the aerial flashover. In this study, the flashover voltage was measured using a cable which had simulated microscopic pores to confirm the above reasoning. When a potential gradient existed on the surface of the insulating solid, the flashover voltage decreased from that in the absence of a potential gradient. It also became clear that the aerial flashover probability depends mainly on the energy of the surface flashover rather than the energy of the main aerial flashover.
机译：本文研究了即使已提供足够的绝缘距离，但在低于Paschen电压的电压下，旋转电机中的线圈导体和壳体之间可能发生空中闪络的可能性。可以认为由固体绝缘体的细孔产生的部分表面闪络会产生空中闪络。在这项研究中，使用模拟微观孔隙的电缆测量了闪络电压，以证实上述原因。当在绝缘固体的表面上存在电势梯度时，闪络电压从不存在电势梯度的情况下降低。同样清楚的是，空中闪络的可能性主要取决于表面闪络的能量，而不是主要空中闪络的能量。

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