“六分裂”线路“一牵六”张力展放导线发生缠绕原因及防范

Reason and Prevention Measure of Intertwist During Putting Leads by Tensile Force in One Pull Six for Six-split Line

随着输电线路电压等级不断升高,输电线路的设计也从"四分裂"导线发展为"六分裂"导线。对"六分裂"紧凑型线路"一牵六"张力展放导线在大档距会产生缠绕的现象,分析其产生原因,根据实践提出防范措施;重点是对大档距进行安装"分线器",相当于在大档距中央增加一组或多组滑轮,把大档距分成两个或多个小档距,隔开子导线,控制子导线的横向摆动幅度,避免子导线相互缠绕。

Along with voltage grade of transmission line is increasing constantly, the design of transmission line is from foursplit conductor to six-split. In allusion to voluble phenomena in long distance span, during putting leads by tensile force in one pull six for six-split line, analysis its reason and give prevention measure based on practice. The keystone is： the separator should be installed for long distance span, it is corresponding add one or more group of chain wheel in center of long distance span, i.e. it divides long span into two or multi-short spans, separates the sub-lead, and control its lateral oscillation＇s scope to prevent sub-leads intertwist each other.