In order to clarify the features of the pre-flashover and predict ice flashover more accurately, the entire evolution of leakage current during the pre-flashover process of both AC long and short suspension insulator strings covered with ice was recorded and analyzed. The tests were carried out in two separate climate chambers, and showed that the pre-flashover processes of both ice-covered long and short insulator strings could be divided into four stages based on the time domain characteristics of leakage...
【基金】
国家电网公司科技项目(GY71-13-034)~~
【更新日期】
2017-10-23
【分类号】
TM216
【正文快照】
0引言1近年来国内外关于覆冰绝缘子闪络引发停电事故的报道逐渐增多[1-4]。仅2006–01—2007–06间国内便发生了4次500 k V输电线路冰闪跳闸事故[2]。2008年初南方13省遭受罕见雪灾,绝缘子覆冰闪络引发大范围停电事故,造成直接经济损失约100亿元[2]。因此,绝缘子覆冰闪络问题引
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