220kV输电线路电动升降法等电位带电作业研究与应用  

Research and application of equipotential operation with electric lift for 220kV transmission lines

作　　者：乔丕凡 赵荣升 宋云海 王立勇[1] 张凯[1] QIAO Pifan;ZHAO Rongsheng;SONG Yunhai;WANG Liyong;ZHANG Kai(State Grid Weifang Power Supply Company,Weifang,Shandong 261000)

机构地区：[1]国网潍坊供电公司,山东潍坊261000

出　　处：《电气技术》2023年第3期85-92,共8页Electrical Engineering

摘　　要：目前,220kV输电线路带电检修常采用绝缘软梯、硬梯或沿绝缘子串进出电场的方式开展等电位带电作业。针对该类作业对带电检修人员体力要求极高、攀爬电力杆塔存在高处坠落安全风险等问题,提出一种220kV输电线路等电位带电作业新方法。本文论证该方法的可行性,并通过现场工频耐压试验验证了其安全性。首先,给出220kV输电线路电动升降法等电位带电作业的基本操作流程,说明无人机抛牵引绳、搭建绳索保护站和操作电动升降机进出等电位的作业方法和安全注意事项;然后,通过电动升降法等电位带电作业的现场应用对该方法进行验证并得出结论:220kV输电线路电动升降法等电位带电作业提升了作业效率,平均作业时间由112min缩短至40min,降低了劳动强度,提高了作业的安全系数,降低了作业人员高处坠落、人身触电等安全风险。At present,the live operations of 220kV transmission lines adopts insulated soft ladders,hard ladders or the way of entering and leaving the electric field along the insulator string.In view of the extremely high physical requirements and safety risks of climbing towers,etc,a new method of live operations for 220kV transmission lines is proposed.In this paper,the feasibility of the proposed method is demonstrated,and its safety is verified by withstand voltage test.First,the basic operation process of equipotential operation using electric lift is described.The operation method and safety precautions of throwing traction rope with unmanned aerial vehicle(UAV),building the rope protection station and operating the electric lift are explained.Then the method is verified by the live operation,and it is concluded that the equipotential operation using electric lift for 220kV transmission lines can greatly improve the operation efficiency,reduce the labor intensity,and improve the safety of the operation.The average working time is reduced from 112 minutes to 40 minutes.The safety risks such as falling from heights and electric shock are reduced effectively.

关 键 词：带电作业 等电位作业 电动升降法 现场应用 

分 类 号：TM75[电气工程—电力系统及自动化]