±500 kV直流线路失稳杆塔拆线拆塔方法  

Method for Dismantling Unstable Towers on±500 kV DC Transmission Line

作　　者：黄金领 邹权林 马志伟 邱已蔚 张明洲 HUANG Jinling;ZOU Quanlin;MA Zhiwei;QIU Yiwei;ZHANG Mingzhou(Nanning Bureau EHV Power Transmission Company China Southern Power Grid Co.,Ltd.,Nanning 530028 China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司南宁局,广西南宁530028

出　　处：《红水河》2025年第1期120-125,共6页

摘　　要：针对某±500 kV直流线路杆塔因边坡滑移导致杆塔倾斜率快速变化及动态失稳现象,提出“两端、两极导线同时拆除”的失稳杆塔拆解方法。通过保持失稳杆塔在导地线拆除过程中两侧荷载的动态平衡,有效保障铁塔与作业人员安全,防止故障范围扩大,同时降低对公路交通及周边居民的影响。对耐张塔整体倒塔过程进行受力核算,解决了绞磨拉力不足可能引发的跳挡反转、倒塔方向失控等问题,对保护周边杆塔及设备具有重要工程意义。Aiming at the rapid change of tower tilt rate and dynamic instability of a±500 kV DC line tower caused by slope sliping a method of dismantling unstable tower withsimultaneous removal of conductors at two ends and two poles is proposed.By maintaining the dynamic balance of the loads on both sides of the unstable tower during the demolition of the grounding wire the safety of the tower and the workers can be effectively guaranteed the expansion of the fault range can be prevented and the impact on the highway traffic and the surrounding residents can be reduced.The force calculation of the overall collapse process of the tension tower is carried out which solves the problems such as the reverse of the jump gear and the out of control of the tower collapse direction caused by the insufficient tension of the grinding force.It is of great engineering significance to protect the surrounding towers and equipment.

关 键 词：500 kV直流线路 失稳杆塔 边坡滑移 倒塔 拆除 

分 类 号：TM754[电气工程—电力系统及自动化]