At present, 220kV transmission line usually adopts double split wire in order to meet the electrical characteristics, reduce the surface potential gradient, avoid the electromagnetic force between the wires, make the ...At present, 220kV transmission line usually adopts double split wire in order to meet the electrical characteristics, reduce the surface potential gradient, avoid the electromagnetic force between the wires, make the current between the two wires, will not produce a big pull, or even if the moment of pull, it can also be restored to the original position after the accident. The spacer rod on the double split wire is not correct or disturbed by the vibration during the wire, which will cause loosening and damage to threaten the normal operation of the power system. This paper describes a special tool to replace or add the isolation rod to replace and install the double-wire isolation rod. The results of this study can provide a reference for replacing 220kV double split wire spacers.展开更多
针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩...针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩分别进行受力特性分析,计算发现提线钩上主体受力薄弱部位位于顶端螺栓连接孔处,当施加3倍额定荷载(240 k N)时,最大变形位移为0.51 mm,最大应力为1.9×10~8 Pa;副钩受力薄弱部位位于副钩螺栓连接处,当施加3倍额定荷载(40 k N)时,最大位移为0.91 mm,最大应力为1.7×10~8 Pa。经力学试验测试,该提线钩最大破坏力为260 k N,满足240 k N的设计要求。碳纤维六线提线钩的成功研制,为碳纤维复合材料在特高压带电作业中的应用奠定基础。展开更多
文摘At present, 220kV transmission line usually adopts double split wire in order to meet the electrical characteristics, reduce the surface potential gradient, avoid the electromagnetic force between the wires, make the current between the two wires, will not produce a big pull, or even if the moment of pull, it can also be restored to the original position after the accident. The spacer rod on the double split wire is not correct or disturbed by the vibration during the wire, which will cause loosening and damage to threaten the normal operation of the power system. This paper describes a special tool to replace or add the isolation rod to replace and install the double-wire isolation rod. The results of this study can provide a reference for replacing 220kV double split wire spacers.
文摘针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩分别进行受力特性分析,计算发现提线钩上主体受力薄弱部位位于顶端螺栓连接孔处,当施加3倍额定荷载(240 k N)时,最大变形位移为0.51 mm,最大应力为1.9×10~8 Pa;副钩受力薄弱部位位于副钩螺栓连接处,当施加3倍额定荷载(40 k N)时,最大位移为0.91 mm,最大应力为1.7×10~8 Pa。经力学试验测试,该提线钩最大破坏力为260 k N,满足240 k N的设计要求。碳纤维六线提线钩的成功研制,为碳纤维复合材料在特高压带电作业中的应用奠定基础。
