摘要
针对输电线微风振动传统计算方法能量平衡法计算误差较大的特点,分别从风能输入功率、输电线自阻尼功率、防振锤消耗功率、输电线-防振锤耦合体系的振动求解等方面,对能量平衡法进行了改进,使能量平衡法可以考虑更多的影响因素以提高求解精度。基于改进后能量平衡法编制了计算机辅助计算程序,并以特高压汉江大跨越地线的微风振动防振计算为例,说明了改进后的能量平衡法在特高压输电线微风振动防振设计中的应用。
The aeolian vibration of an overhead line is analyzed most commonly by applying the energy balance method, but the result of this method has big errors. In order to improve the solving precision of the method, the improvement of power inputted from wind, the conductor self-damping, the power dissipated by dampers and the solution for the nonlinear vibration of power line-damper coupling system were reported in the paper. Then the computer program is developed by applying MATLAB based on an improved energy balance method, and Ultra-high Voltage （UHV） Han-River Large Crossing Ground Wires were analyzed. The results show that the algorithm is very efficient. Therefore, the improved method can be applied to the design of UHV transmission lines.
出处
《工程力学》
EI
CSCD
北大核心
2009年第A01期176-180,197,共6页
Engineering Mechanics
基金
国家自然科学基金项目(50878093)
关键词
微风振动
能量平衡法
防振锤
风能输入功率
导线自阻尼
aeolian vibration
energy balance method
stockbridge dampers
wind power input
conductor self-damping
