摘要
建立了输电线振动方程,利用体系的边界条件和位移连续性准则得到一组条件方程,将防振锤对输电线的影响简化成相互作用力,由力系平衡条件构造一组平衡方程。联立两组方程并将其转换成标准特征值问题,求解得到输电线—防振锤体系频率和振型。以特高压输电线为例,计算了不同体系的频率与振型,并与理论值进行了对比。结果表明,该法为计算微风振动响应、探讨防振效果、优化防振锤的安装位置和个数奠定了基础。
To study the aeolian vibration of transmission line with dampers more exactly, the system dynamic characters should be researched. Firstly, the vibration equation is written out; a series of equations are obtained using system boundary conditions and displacements continuum rule. Secondly, the effect which dampers give the transmission line is simplified to the force to each other. Another set of equations are obtained by force balance conditions in the attach loca-tions of dampers. Simultaneous equations, Which received hereinbefore, then translated to standard eigenvalue problem. Frequency and modes of transmission line with dampers system can be solved expediently. At last, take 1000kV UHV transmission line as an example, system frequency and modes in different instances are computed. Compared with the theo-retical result , some of conclusion can be summarized. Taking one word, this method is helpful for future research such as response of the aeolian vibration of transmission line with dampers,damper effect,and the optimization dampers locations and numbers.
出处
《水电能源科学》
2008年第4期175-178,共4页
Water Resources and Power
基金
国家电网公司科学基金资助项目([2007]413)
关键词
输电线
防振锤
微风振动
动力特性
特高压
transmission conductor
stockbridge damper
aero-vibration
dynamic characteristics
UHV
作者简介
李黎（1956-），女，教授，研究方向为结构的振动与消能减震，E-mail：lili_2431@163.com
