分裂导线-间隔棒体系子导线不同期脱冰动力响应研究

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振动与冲击 ›› 2025, Vol. 44 ›› Issue (14) : 41-52.

振动理论与交叉研究

分裂导线-间隔棒体系子导线不同期脱冰动力响应研究

孟祥龙1，朱登杰*2，刁望圆1，王郑1，颜召2

作者信息 +

Dynamic responses of the sub-members of a bundled conductor-spacer system during asynchronous de-icing

MENG Xianglong1，ZHU Dengjie*2，DIAO Wangyuan1，WANG Zheng1，YAN Zhao2

Author information +

文章历史 +

摘要

为探究分裂导线子导线不同步脱冰下的动力响应，建立了双分裂、四分裂、六分裂导线间隔棒体系有限元模型，提出了间隔棒偏转角度的计算方法，研究了双分裂导线子导线部分位置脱冰以及链式脱冰下的体系响应，识别了四分裂、六分裂导线的子导线最不利脱冰组合，分析了导线脱冰跳跃高度、水平应力、间隔棒偏转角度等脱冰响应结果，进而研究了导线扭转的影响因素。研究结果表明：脱冰子导线的脱冰跳跃高度大于其他子导线，但水平应力更小，档距最中央的次档距导线跳跃高度最大。对于双分裂导线，两根子导线从一端向另一端同步脱冰时风险最小，而档距中央位置的覆冰先脱落时风险更大；多分裂导线应避免仅下部导线脱冰而上部导线仍然存在大量覆冰的情况，该脱冰组合极易导致间隔棒翻转，除冰时应优先使上部两根子导线同步脱冰。

Abstract

To investigate the dynamic response of subconductors during asynchronous de-icing, finite element models were developed for twin, quad, and hex-bundled conductors with spacer systems. A method for calculating the deflection angle of the spacers was proposed. Furthermore, this study examined the system response under partial-position de-icing and zipped de-icing of twin-bundle conductors, and identified the most adverse de-icing combinations for quad and hex-bundle conductors. It analyzed the de-icing response results, such as conductor jump height, horizontal stress, and spacer bar deflection angles, and studied the influencing factors of conductor torsion. The research findings indicate that the jump height of the de-iced sub-conductor is greater than that of the other sub-conductors, yet it experiences less horizontal stress. The maximum jump height occurs at the sub-span conductor located at the center of the span. For twin-bundle conductors, the risk is minimized when both sub-conductors de-ice synchronously from one end to the other. However, there is greater risk if the ice at the center of the span falls off first. For multi-bundle conductors, it is crucial to avoid scenarios where only the lower conductors are de-iced while the upper conductors remain heavily iced, as this combination can easily lead to spacer flipping. Priority should be given to synchronously de-icing the upper pair of sub-conductors during de-icing operations.

导出引用

孟祥龙1, 朱登杰2, 刁望圆1, 王郑1, 颜召2. 分裂导线-间隔棒体系子导线不同期脱冰动力响应研究[J]. 振动与冲击, 2025, 44(14): 41-52

MENG Xianglong1, ZHU Dengjie2, DIAO Wangyuan1, WANG Zheng1, YAN Zhao2. Dynamic responses of the sub-members of a bundled conductor-spacer system during asynchronous de-icing[J]. Journal of Vibration and Shock, 2025, 44(14): 41-52

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