Configuration effect on DC flashover on polluted insulators

作者：Ruiqian Zhang, Dejun Zhu, Zhibin Wang · 发表于：IEEE Transactions on Electrical Insulation · 年份：1990 · DOI：10.1109/14.55734 · 被引用次数：7 · 研究领域：High voltage insulation and dielectric phenomena、High-Voltage Power Transmission Systems、Power Transformer Diagnostics and Insulation

DC pollution discharge phenomena and flashover voltages of models made of glass plates, simulating a real insulator of the cap and pin type, were observed and measured. The influence of the main dimensions, such as the distance between sheds, the height of ribs, the width of ditches and the diameter of the disk, on the DC pollution flashover voltages of insulators is investigated and discussed. Some useful results are obtained relating to the prevention of bridging over clearances by local arcs and the improvement of the withstand voltage per unit leakage distance. Based on these results, suggestions for the rational design of DC insulators are presented.>