电网盆式绝缘子失效分析研究  

Analysis on the Malfunction of Basin-type Insulator

作　　者：何喜梅[1] 陈文强[1] 王志惠[1] 刘高飞[1] 李涛[2] 

机构地区：[1]国网青海省电力公司电力科学研究院,青海西宁810008 [2]国网青海省电力公司培训中心,青海西宁810008

出　　处：《青海电力》2015年第2期24-29,共6页Qinghai Electric Power

摘　　要：通过对青海某750 k V变电站750 k V I母跳闸故障全面分析,从故障设备的现场解体到返厂进一步解体外观检查,以及X射线检测、玻璃化转变温度(DSC)分析、Al2O3固体含量测定、线膨胀系数检测、扫描电镜分析和有限元对比计算分析的全面失效研究,得出故障发生的主要原因是安装质量造成盆式绝缘子异常受力,导致盆式绝缘子失效,引发跳闸事故。Based on the comprehensive analysis on the 750 kV Bus I tripping fault in a 750 kV substation in Qinghai, including strip inspection on the site and in factory, X ray detection, glass transition temperature analysis （ DSC ） , AL2O3 solid content determination, linear expansion coefficient measure, scanning electron microscope analysis and finite element analysis, this paper concludes that the primary cause that the basln-type insulator was under abnormal stress result by bad installation quality of the equipment result in the malfunction of the insulator and then the tripping fauh.

关 键 词：故障 盆式绝缘子 失效 研究 

分 类 号：TM216[一般工业技术—材料科学与工程]