一起35 kV线路两基相邻直线杆玻璃绝缘子串的多点故障分析  

A Multipoint Fault Analysis for Glass Insulator String on Two Adjacent Straight-Line Poles of 35 kV Transmission Line

作　　者：郑江[1] 刘均华 卓少伟 ZHENG Jiang;LIU Junhua;ZHUO Shaowei(School of Electrical Engineering,Guangxi University,Nanning 530004,China;Fangchenggang Power Supply Bureau,Guangxi Power Grid Co.,Ltd.,Fangchenggang 538004,China;Chongzuo Power Supply Bureau,Guangxi Power Grid Co.,Ltd.,Chongzuo 532399,China)

机构地区：[1]广西大学电气工程学院,广西南宁530004 [2]广西电网有限责任公司防城港供电局,广西防城港538004 [3]广西电网有限责任公司崇左供电局,广西崇左532399

出　　处：《红水河》2024年第5期122-127,145,共7页

摘　　要：针对一起35 kV线路两基相邻直线杆玻璃绝缘子串的残锤、雨闪、电弧风偏及断线等的多点故障,笔者分析了故障原因,并提出改进措施。结果表明:该线路19号杆仅有2片绝缘子、1个残锤的A相2片串发生持续间歇雨闪,扣除残锤后绝缘子的每串最少片数少于规范要求值、单相雨闪故障延时跳闸等是引发该起故障的主要原因;35 kV线路采用4片玻璃绝缘子串或改用复合绝缘子,加强绝缘子串的可恢复绝缘、抗污及灭弧性能,可防止发生此类故障。In view of a multipoint fault of residual hammer,rain flashover,arc wind deviation and broken line of glass insulator string on two adjacent straight-line poles of 35 kV transmission line,the causes of the fault are analyzed,and improvement measures are put forward.The results showed that only two insulators and one residual hammer in the A-phase two-piece string of the 19th pole of the line experienced continuous intermittent rain flashes,the minimum number of insulators per string is less than the required value in the specifications after deducting the residual hammer,and the delay tripping of single-phase rain flashover fault is the main cause of the fault;The 35 kV line adopts four glass insulator strings or uses composite insulators to enhance the recoverable insulation,anti-pollution and arc extinguishing performance of the insulator strings,which can prevent such faults from occurring.

关 键 词：35 kV线路 玻璃绝缘子 残锤 故障分析 间歇雨闪 间歇过电压 复合绝缘子 

分 类 号：TM216.4[一般工业技术—材料科学与工程]