基于多通道模态分析的输电线路舞动特征识别

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (19) : 132-137.

论文

万成1,2 严波1,3 吕中宾4,5 魏建林4,5 李清4,5

作者信息 +

Identification of Galloping Characteristics of Transmission Line Based on Multichannel Mode Analysis

WAN Cheng1,YAN Bo1,2 ,LÜ Zhong-bin3,4,WEI Jian-lin3,4,LI Qing3,4

Author information +

文章历史 +

摘要

采用随机减量法（RDM）从实测输电线路舞动位移信号中提取非受迫振动信号，将其作为特征系统实现算法（ERA）的输入，实现对舞动频率、振型和阻尼比的识别。利用Matlab编制相应的识别软件，通过梁的振动试验验证了方法和软件的正确性。针对真型试验输电线路六分裂线路段位移时程多通道实测结果，采用获得的参数识别方法和软件，识别得到该线路舞动事件的频率、振动形态以及线路的阻尼比。该方法和软件为实际线路舞动特征参数的识别提供了重要手段。

Abstract

With the random decrement method (RDM), the non-forced vibration responses are extracted from the galloping responses of a transmission line, and the galloping frequencies, vibration modes and damping ratios are identified by the eigensystem realization algorithm (ERA) with input of the free vibration responses. The identification software is coded with Matlab, which is proved by the test of beam vibration. Further, by means of the developed software, the frequencies, vibration modes and damping of the real six bundle conductor lines are identified. The method and software provide an important means for the identification of galloping characteristics of real transmission lines.

导出引用

万成1,2 严波1,3 吕中宾4,5 魏建林4,5 李清4,5. 基于多通道模态分析的输电线路舞动特征识别[J]. 振动与冲击, 2016, 35(19): 132-137

WAN Cheng1,YAN Bo1,2,Lü Zhong-bin3,4,WEI Jian-lin3,4,LI Qing3,4. Identification of Galloping Characteristics of Transmission Line Based on Multichannel Mode Analysis[J]. Journal of Vibration and Shock, 2016, 35(19): 132-137

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