针对检修架空配电线路时常需操作人员反复登杆高空作业装拆接地线存在的效率较低和高空坠落风险问题,提出并设计了一种人员在地面通过拖拽方式即可完成短路接地线安装和拆卸的新型拖拽式导线端线夹.该线夹通过与跨越接地位置的绝缘绳连接,在绝缘绳的另一端向下拉绳,即可拖拽线夹携带短路接地线上升并顺利卡住接地位置,通过控制绳释放压缩弹簧,使得线夹夹紧接地位置.检修完成需要拆卸该线夹时,只需要在地面拖拽线夹上的另一根绝缘绳即可让线夹脱离接地位置并回收.为了检验新型线夹能够在正常断电和意外突然通电情况下均能安全可靠夹紧接地位置,从线夹的夹紧力、短路电流电动力、电流的热效应3个方面进行仿真研究及实验,结果表明,3方面的参数均在线夹的安全范围内,为设计此类新型线夹和安全使用提供了可靠的理论依据.
With pespect to the low efficiency and risk of high-altitude falling for operators to repeatedly climb poles to install and remove grounding wires for maintenance of overhead distribution lines, a new drag type wire end clamp is proposed and designed. This clamp allows personnel to install and remove grounding wires by dragging them on the ground. The clamp is connected to an insulation rope that spans the grounding position. By pulling the rope downwards at the other end of the insulation rope, the clamp can be dragged to carry the grounding wire up and smoothly clamp the grounding position. By dragging the controlling rope to release the compression spring, the clamp can be tightly connected to the grounding position. When the maintenance is completed and the clamp needs to be removed, simply drag the other insulated rope on the clamp to detach it from the grounding position and retrieve it on the ground. In order to verify that the new type of wire clamp can safely and reliably clamp the grounding position under normal power outage and unexpected sudden power on situations, simulation research and experiments were conducted from three aspects: clamping force of the wire clamp, short-circuit current electrodynamic force,- DOI:10.3969/j.issn.1000-1565.2025.04.011新型拖拽式导线端线夹设计与仿真朱成昊1,朴天高1,曹亮1,户克磊1,张辰琪1,李金迪1,花广如2(1. 国网北京市电力公司 大兴供电公司,北京 102600;2. 华北电力大学 河北省电力机械装备健康维护与失效预防重点实验室,河北 保定 071003)摘 要:针对检修架空配电线路时常需操作人员反复登杆高空作业装拆接地线存在的效率较低和高空坠落风险问题,提出并设计了一种人员在地面通过拖拽方式即可完成短路接地线安装和拆卸的新型拖拽式导线端线夹.该线夹通过与跨越接地位置的绝缘绳连接,在绝缘绳的另一端向下拉绳,即可拖拽线夹携带短路接地线上升并顺利卡住接地位置,通过控制绳释放压缩弹簧,使得线夹夹紧接地位置.检修完成需要拆卸该线夹时,只需要在地面拖拽线夹上的另一根绝缘绳即可让线夹脱离接地位置并回收.为了检验新型线夹能够在正常断电和意外突然通电情况下均能安全可靠夹紧接地位置,从线夹的夹紧力、短路电流电动力、电流的热效应3个方面进行仿真研究及实验,结果表明,3方面的参数均在线夹的安全范围内,为设计此类新型线夹和安全使用提供了可靠的理论依据.关键词:导线端线夹;拖拽式;夹紧力;电动力;电流热效应;仿真中图分类号:TH122;TM726 文献标志码:A 文章编号:1000-1565(2025)04-0431-08Design and simulation of a new drag type wire end clampZHU Chenghao1, PIAO Tiangao1, CAO Liang1, HU Kelei1, ZHANG Chenqi1, LI Jindi1, HUA Guangru2(1.Daxing Power Supply Company,State Grid Beijing Electric Power Company, Beijing 102600,China;2. Hebei Key Laboratory of Electric Machinery Health Maintenance and Failure Prevention,North China Electric Power University, Baoding 071003,China)Abstract: With pespect to the low efficiency and risk of high-altitude falling for operators to repeatedly climb poles to install and remove grounding wires for maintenance of overhead distribution lines, a new drag type wire end clamp is proposed and designed. This clamp allows personnel to install and remove grounding wires by dragging them on the ground. The clamp is connected to an insulation rope that spans the grounding position. By pulling the rope downwards at the other end of the insulation rope, the clamp can be dragged to carry the grounding wire up and smoothly clamp the grounding position. By dragging the controlling rope to release the compression spring, the clamp can be tightly connected to the grounding position. When the maintenance is completed and the clamp needs to be removed, simply drag the other insulated rope on the clamp to detach it from the grounding position and retrieve it on the ground. In order to verify that the new type of wire clamp can safely and reliably clamp the grounding position under normal power outage and unexpected sudden power on situations, simulation research and experiments were conducted from three aspects: clamping force of the wire clamp, short-circuit current electrodynamic force,- 收稿日期:2025-03-24;修回日期:2025-04-18 基金项目:国网北京市电力公司科技项目(520212230006) 第一作者:朱成昊(1990—),男,国网北京市电力公司工程师,主要从事电力电子技术研究. E-mail: jerry19901028@126.com 通信作者:花广如(1971—),男,华北电力大学教授,博士,主要从事电力特种机器人研究.E-mail: huagr2007@163.com 第4期朱成昊等:新型拖拽式导线端线夹设计与仿真河北大学学报(自然科学版) 第45卷and current thermal effect. The results showed that all three parameters were within the safe range of the wire clamp, providing a reliable theoretical basis for the design and safe use of such new wire clamps.
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