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The Influence Of Metal Particles On Insulating Properties Of Sf6 Gas

机译：金属颗粒对Sf6气体绝缘性能的影响

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Metal particles appear in interelectrode space of gas insulation as a consequence of manufacturing processes or due to exploitation. This type of particles can lead to isolation weakness and to cause undesirable breakdown of insulating system. The aim of this paper is to investigate, theoretically, numerically and experimentally, the influence of particles' number, shape, size and position on dc breakdown voltage of the system insulated by SF6 gas. For that purpose, the numerical program that calculate the breakdown voltage of system insulated with SF6 gas will be developed, under the assumption of conducting particle presence with defined shape. Parameters will be: the electrode shape, interelectorde distance, metal particle shape and metal particle position. Results obtained by calculation will be experimentally verified under well defined laboratory conditions. Based on well known electrical discharge mechanisms, numerical calculations and experiments preformed within the paper, the effects of metal particles in the intereledrode space will be established as well as their importance in engineering practice.
机译：由于制造过程或由于开采，金属颗粒出现在气体绝缘的电极间空间中。这种类型的颗粒会导致绝缘薄弱，并导致绝缘系统发生故障。本文的目的是在理论上，数值上和实验上研究粒子的数量，形状，大小和位置对以SF6气体绝缘的系统的直流击穿电压的影响。为此目的，将在假定粒子存在定义形状的前提下，开发出计算程序，该程序可以计算出用SF6气体绝缘的系统的击穿电压。参数将是：电极形状，电极间距离，金属颗粒形状和金属颗粒位置。通过计算获得的结果将在明确定义的实验室条件下进行实验验证。基于论文中众所周知的放电机理，数值计算和实验，将确定金属间微粒空间中金属颗粒的作用及其在工程实践中的重要性。

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