一种带电带负荷更换非承力线夹方法

A Method for Replacing Non-load-bearing Clamps with Maintained Power Load

架空线路长时间运行后,各耐张杆塔上连接耐张引线的非承力线夹在长期室外运行过程中常因过流、发热或风压振动而导致螺栓松动或烧损,因此需定期进行检修。提出一种带电带负荷更换非承力线夹方法,代替现有单一绝缘引流线或单相消弧开关和绝缘引流线串接的方式,既能避免停电检修引起时户数损失,又能提升现场作业效率,降低现场安全风险,重点介绍了该方法的实施过程和应用优势。

After long time operation of overhead power lines,the non-load-bearing clamps connecting the tension-resistant wires on various towers often experience the possibility of bolt loosening or burning due to overcurrent,heat generation,or wind-induced vibrations.Therefore,regular maintenance is required.This paper proposes a method for replacing non-load-bearing clamps with maintained power load which can be a better alternative to the methods of existing single insulating drainage line or the series connection of single-phase arc extinguishing switches and insulating drainage lines.It not only avoids power outage maintenance leading to customer losses but also enhances on-site operational efficiency and reduces on-site safety risks.The implementation process and applicative advantages of this method are emphasized.