摘要
为西电东送输电线路绝缘选择提供试验依据,该文在人工气候室内模拟高海拔、覆冰条件,对10kV合成绝缘子进行试验研究,得到了高海拔、覆冰条件下10kV合成绝缘子直流闪络电压与电压极性的关系;分析了三种不同覆冰状态下10kV合成绝缘子憎水性的变化及覆冰状态对覆冰闪络电压的影响。试验结果表明:覆冰状态对其闪络电压的极性效应有影响,且无论在正极性还是负极性,其平均冰闪电压随着海拔升高、覆冰量的增加以及覆冰水电导率的增加而降低。
Based on the results of the flashover tests of iced 10kV DC composite insulator carried out in the artificial climate chamber. In this paper the relation between the flashover voltage of iced 10kV DC composite insulator and the effect of voltage polarity on flashover voltage have been obtained in colligated condition of low atmospheric pressure and icing at high altitude districts. The hydrophobicity of 10kV composite insulator under three different conditions and the effect of ice shape on flashover of ice surface have been analyzed. Test results indicated that the average flashover voltage is reduced with the hoist of altitude, the increase of ice amount and the rise of pollutant.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第7期122-126,共5页
Proceedings of the CSEE
基金
国家自然科学基金(50007008)~~
