单双串110kV复合绝缘子工频闪络特性试验研究

Test on power frequency flashover property of 110kV single and double composite insulator strings

对单串及不同悬挂方式的双串110 kV棒形悬式复合绝缘子进行了干、湿及丧失憎水性后的湿工频闪络电压试验。对双串复合绝缘子在憎水性丧失后湿闪络电压显著下降的原因进行了分析,试验和分析结果表明,采用倒V型串对双串复合绝缘子进行改造可提高湿工频闪络电压,避免两支缘缘子串间的相互影响。

110 kV long rod composit insulators with singel string or different suspended double strings were made dry and wet power frequency flashover voltage test and the test after hydrophobicity lost,analyzes the cause of wet flashover voltage decreasing remarkably for the double string composite insulators after the hydrophobicity lost,suggests using inverse V type strings improve double strings composite insulators.