伞裙结构对110kV复合绝缘子交流覆冰特性影响  

Probe into Effect of Umbrella-shaped Structure on AC Icing Performance of 110kV Composite Insulator Strings

作　　者：李兴旺[1] 解秀余[1] 胡建林[2] 薛军 王援军[4] 

机构地区：[1]陕西电力科学研究院,陕西西安710054 [2]重庆大学电气工程学院,重庆400030 [3]陕西省电力公司,陕西西安710048 [4]宝鸡供电局,陕西宝鸡721004

出　　处：《陕西电力》2009年第9期19-23,共5页Shanxi Electric Power

摘　　要：输电线路覆冰引起的倒塔和绝缘子闪络事故严重威胁电力系统的安全运行,本文开展伞裙结构对110 kV复合绝缘子交流覆冰特性影响的研究,建立110 kV复合绝缘子覆冰及污秽共存状态下的电场计算模型,对其电场分布进行仿真计算,综合比较电场计算结果和覆冰闪络特性试验结果,提出能提高污秽覆冰复合绝缘子交流闪络电压的优化伞形结构,对覆冰区110 kV输电线路复合绝缘子防冰闪改造有指导意义。Tower collapses and insulator flashover caused by transmission line icing severely threaten power system safety. Effect of umbrella-shaped structure on 110 kV composite insulator ac icing characteristics are studied in this paper. Electric field calculating model under 110 kV composite insulator icing and contaminant state is established and the demonstration is made. Through comprehensively comparing the electric field calculation results and icing flashover examination results, the umbrella-shaped structure is suggested for improving ac flashover voltage of contaminant icing composite insulator, which has instructed significance for antiicing flashover reforming of 110 kV transmission line composite insulator in icing area.

关 键 词：输电线路 覆冰闪络 复合绝缘子 

分 类 号：TM216[一般工业技术—材料科学与工程]