覆冰多分裂导线三种TMD防舞效果对比研究

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (14) : 36-42.

论文

楼文娟，梁洪超，温作鹏

作者信息 +

Comparative study on the anti-galloping effect of three types of TMDs for iced multi-bundled conductors

LOU Wenjuan，LIANG Hongchao，WEN Zuopeng

Author information +

文章历史 +

摘要

在风洞试验验证的覆冰导线三自由度运动方程基础上建立了竖向、扭转向和竖扭耦合调谐质量阻尼器和导线系统的运动方程。提出采用扭转向和竖扭耦合的调谐质量阻尼器进行舞动防治，并与竖向调谐质量阻尼器进行对比。根据李雅普诺夫第一稳定定理计算导线-阻尼器系统起舞风速，采用Newmark-Beta法求解运动方程验证起舞风速的正确性。计算了D形覆冰6分裂导线全攻角舞动幅值，以舞动幅值最大的170°风攻角为目标风攻角，以提高目标风攻角起舞风速为优化目标，对3种调谐质量阻尼器进行参数优化，并对比研究了不同风攻角下3种阻尼器在最优参数下对于导线起舞风速提高的效果。研究表明：竖向调谐质量阻尼器在覆冰侧迎风的5°~20°风攻角下降低了起舞风速；扭转向调谐质量阻尼器使得覆冰侧迎风的0°~40°风攻角的导线起舞风速提高至10m/s以上；竖扭耦合的调谐质量阻尼器较另外两种形式的调谐质量阻尼器具有更好的提高起舞风速的效果。

Abstract

The equations of bundled conductor attached with either vertical, torsional or vertical-torsional coupled tuned mass damper were established based on the experimental verified 3 DOF conduct equations. Torsional and vertical-torsional coupled tuned mass damper were proposed to prevent galloping, and compared with the vertical tuned mass damper. The galloping wind velocity of conductor-damper system was calculated applying Lyapunov's first stability theorem. The galloping wind velocity was verified by solving the equations applying Newmark-Beta method. The galloping amplitude of an D-shaped 6- bundled conductor section model was calculated at each wind attack angle, and the170 degree wind attack angle which has the largest galloping amplitude, was chosen as the target attack angle and the optimization objective was improving the galloping wind speed of the target attack angle, the parameters of tuned mass dampers were optimized, the effects of the dampers on the galloping wind velocity under the optimal parameters were studied and compared at different wind attack angles. The results show: vertical tuned mass damper decreases the galloping wind speed at the attack angle from 10 to 20 degree; torsional tuned mass damper increases the galloping wind speed to more than 10 m/s at 0 ~40 degree wind attack angle; vertical-torsional coupled tuned mass damper has a better effect on improving the galloping wind speed.

导出引用

楼文娟，梁洪超，温作鹏. 覆冰多分裂导线三种TMD防舞效果对比研究[J]. 振动与冲击, 2020, 39(14): 36-42

LOU Wenjuan，LIANG Hongchao，WEN Zuopeng. Comparative study on the anti-galloping effect of three types of TMDs for iced multi-bundled conductors[J]. Journal of Vibration and Shock, 2020, 39(14): 36-42

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