输电线路避雷线更换防护工具的研制与应用 摘要： 现代电力系统规模不断扩大，维护检修工作任务艰巨。本文主要介绍在更换输电线路避雷线工作中，为防止避雷线断落造成人员伤亡和设备损坏，而研制出的一种新型的跨越工具。该跨越工具主要由夹线器、钢丝绳、紧线器、U 型环、夹线器组成。实践证明该跨越工具具有可靠性高、操作灵活简便等优点，不但缩短了完成避雷线防护措施的时间，而且节省了人力、物力，大大提高了更换避雷线效率,可以推广使用。关键词：输电线路；避雷线；防护工具中图分类号：T 文献标识码：B The development and application of guard tool of the lightning conductor replacement of transmission lineAbstract: With the modern power system scale expands unceasingly, the maintenance work become harder. In order to prevent the damage of casualties and equipment caused by the wire break fall in the work of the lightning conductor replacement of transmission line. In this paper, a new kind of tool is introduced. The cross tool is mainly composed of clip wire, steel wire rope, tightener, U ring, thread clamp device. Practice proved that the cross tool has the advantages of high reliability, flexible operation simple and convenient. It can not only shorten the length of protective measures of ground wire, but also save manpower and material resources, greatly improve the efficiency of the replacement of wire. It is worthy of promotion.Keywords: electric transmission line; lightning conductor; guard tool0 引言 现代电力系统是一个超高压、大容量和跨区域的巨大联合系统，随着电力系统规模的不断扩大，高压远距离输电线路也日益增多。高压输电线路分布范围广，穿越地区地形复杂，气候条件多变，容易发生各种故障，维护检修工作的任务越来越艰巨。随着输电线路的逐年老化，部分线路的避雷线锈蚀严重，如更换不及时，将会导致避雷线断裂，造成线路故障，影响电网的安全运行。传统的更换避雷线需要采用张力机牵引就避雷线。该过程中存在着避雷线断落的危险，而且安装脚手架话费时间长，占用线路两侧大...
