中国电机工程学报Issue(30)：5442-5450,9.DOI:10.13334/j.0258-8013.pcsee.2014.30.023
基于上下表面电弧特性的交流绝缘子污秽闪络电压计算
Modeling of AC Arc Discharge on Insulators in Consideration of Arc Characteristic Differences Between Partial Arcs on Top and Bottom Wet-polluted Dielectric Surfaces
摘要
Abstract
Considering the differences in the characteristics of arcs on top and bottom wet polluted surfaces, an AC mathematical model was proposed to predict the flashover voltage of insulators. In order to obtain the parameters of the model, arcs on top and bottom surfaces of triangular glass plate were measured, and the staticU-I characteristics and recovery criteria were also acquired. In addition, an ultra-high speed camera was used to observe the AC partial arc characteristics on top and bottom surfaces the partial arcs. It is found that the U-I characteristics and recovery criteria of top and bottom arcs are different, and the radius and length of the arc column increase exponentially with the leakage current peak. It can be concluded that the ratio between arc length increments on top and bottom surfaces is related to equivalent salt deposit density (ESDD). The flashover voltages obtained by mathematic model commendably coincide with those obtained experimentally.关键词
交流局部电弧/上下湿污表面/电弧特性/污闪电压计算Key words
AC partial arc/top and bottom wet- contaminated surface/arc characteristic/pollution flashover calculation分类
信息技术与安全科学引用本文复制引用
李亚伟,杨昊,张乔根,周军,于昕哲..基于上下表面电弧特性的交流绝缘子污秽闪络电压计算[J].中国电机工程学报,2014,(30):5442-5450,9.基金项目
国家重点基础研究发展计划项目(973项目)(2011CB209406)。The National Basic Research Program of China (973 Program)(2011CB209406) （973项目）
