间隔棒的微分振动抑制能力有限元分析

Finite Element Analysis of Differential Vibration Suppression Capability of Spacer Bar

间隔棒因其具有防止子导线跳跃鞭击等诸多优良特性而被广泛运用于超高压、特高压线路的分裂导线中。在微风作用下导线会发生高频低幅的微风振动,易造成导地线断线、金具的疲劳损害等故障,对输电线路的平稳有序运行造成了极大的威胁。因此,文章利用有限元分析软件ANSYS计算安装间隔棒后分裂导线的稳态幅值,并与不安装间隔棒时的稳态幅值进行对比,研究间隔棒的微分振动抑制能力。

The spacer bar is widely used in the split conductors of EHV and UHV lines because of its excellent characteristics such as preventing jumping and whipping of sub-wires.Under the action of breeze,high frequency and low amplitude aeolian vibration will occur in the conductor,which is easy to cause fault such as broken conductor and fatigue damage of hardware,and poses a great threat to the smooth and orderly operation of the transmission line.Therefore,this paper uses ANSYS to calculate the steady-state amplitude of the split-conductor after the spacer bar is installed,and compares it with the steady-state amplitude when the spacer bar is not installed,so as to study the differential vibration suppression ability of the spacer bar.