The dynamics of wire particles in a coaxial system under AC voltage is studied using a computational algorithm. An approach for predicting the possibility of SF/sub 6/ gas insulation breakdown due to the presence of metallic contaminants is presented. The technique can be used to evaluate particle trapping effectiveness, during commissioning, of certain designs of metallic particle traps. Also described are some experiments conducted in a 70 mm/190 mm diameter coaxial conductor system in the presence of 0.45 mm diameter, 6.4 mm long aluminum wire particles. It is noted that partial discharges in gas insulated systems are indicative of a potential insulation failure. A major cause of such discharges is the presence of conducting particles in the insulating gas. Corona inception voltage, together with the corona-pulse pattern generated by metallic contaminants, can be used as a diagnostic guide in estimating the size of the conducting particles present in the system.
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机译：使用计算算法研究了交流电压下同轴系统中导线颗粒的动力学。提出了一种预测由于金属污染物的存在而导致SF / sub 6 /气体绝缘破坏的可能性的方法。该技术可用于在调试期间评估某些设计的金属颗粒捕集器的颗粒捕集效果。还描述了在直径为0.45毫米，长度为6.4毫米的铝线存在的情况下，在直径70毫米/ 190毫米的同轴导体系统中进行的一些实验。注意，气体绝缘系统中的局部放电表示潜在的绝缘故障。这种放电的主要原因是绝缘气体中存在导电颗粒。电晕起始电压，以及由金属污染物产生的电晕脉冲模式，可以用作估计系统中导电颗粒尺寸的诊断指南。
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