某110kV输电线路污闪原因分析

污闪是造成线路跳闸的主要原因之一。对高海拔、重污秽地区某110 kV输电线路的运行环境进行了详细分析,并通过污秽测量,绝缘试验以及高海拔地区绝缘子统一爬电比距进行修正计算等综合分析,得出随着环境污秽加重,线路跳闸杆塔绝缘子绝缘配置不满要求是引起本次线路污闪跳闸的主要原因,并提出调爬、及时清扫、涂PRTV防污涂料、采用复合绝缘子等措施,防止污闪跳闸发生。

Reason Analysis of Pollution Flashover of a 110 kV Transmission Line

Pollution flashover is one of the main causes of line trip.The operation environment of some 110 kV Transmission Line in high altitude and seriously polluted areas is analyzed in detail and through comprehensive analysis such as pollution measurement,insulation test,corrective calculation of unified specific creepage distance of insulator for high altitude etc,it is concluded that the main cause of this line trip is that insulation configuration of pole insulator can not meet with the requirements when environment’s pollution becomes more serious.The methods such as adjusting creepage distance,cleaning promptly,spreading of PRTV,using composite insulator measures are proposed to prevent the pollution flashover.