阻尼线的耗能计算及其在输电线防振中的应用  

Energy dissipation calculation for wire dampers and its application to suppress aeolian vibration of transmission lines

作　　者：李黎[1,2] 叶志雄[1,2] 江宜城[1,2] 方秦汉[1,2] 

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]华中科技大学控制结构湖北省重点实验室,武汉430074

出　　处：《振动与冲击》2009年第8期16-19,共4页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50878093)

摘　　要：阻尼线是保护架空输电线路免受微风振动危害的理想措施之一,在我国大跨越输电线路中得到广泛应用。通过建立阻尼线理论力学模型,研究其复杂的静力形态,对振动方程用摄动法进行了求解,得到了阻尼线谐振频率和耗能的计算方法。并基于能量平衡法用Matlab编制了计算程序,以特高压长江大跨越地线为对象,设计了β阻尼线加防振锤的组合防振方案。数值计算结果表明,设计的防振方案具有较好的防振效果,能满足特高压输电线的防振要求,可供特高压输电线设计及施工建设时参考。By building the theoretical mechanical model of wire damper, its complex static deformation was solved. Energy dissipation calculation formulae were derived, and the vibration energy dissipated by β wire dampers was considered with energy balance method. The computer program based on energy balance method was developed by applying Matlab, and the vibration of ultra high voltage (UHV) ground wires crossing Yangtze River was analyzed. The anti-vibration scheme of β wire dampers combined with stockbridge dampers was designed to suppress its aeolian vibration. The calculation results show that the damping device can satisfy the requirement of vibration suppression of UHV long span transmission lines.

关 键 词：阻尼线 微风振动 能量平衡法 FR防振锤 特高压输电线 

分 类 号：TM726.3[电气工程—电力系统及自动化]