Conductors Vibration Model Improved and Nonlinear Vibration Analysis

Abstract:

Vibration model can reflect conductors nonlinear vibration under wind excitation .The paper improves and expounds the detailed derivation process based on the previous studies, and studies the movement type of conductors. Comparing with the vertical displacement change of conductors in different conditions to prove that the model derived is reasonable. The paper analyses conductors nonlinear vibration in the case of external condition change to study the movement change of conductors. Lyapunov stability theory and Routh-Hurwitz criterion are used to obtain critical wind velocity of conductors, namely the conditions for conductor galloping. The results shows model derived can reflect conductors nonlinear vibration under wind excitation.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 1476-1480
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.1476
• Online since: January 2012
• Authors: Li Qin, Wei Li, Bin Ai
• Keywords: Conductor Galloping, Critical Wind Velocity, Nonlinear Vibration, Vibration Model, Wind Excitation

References

[1] Dong Jinkun: Structure galloping theory analysis and wind vibration control (Northeastern University, Shenyang 2005).

[2] Zhao Gaoyu:Galloping computation and analysis for long multi-span bundle conductors of power transmission lines(Huazhong University of Science and Technology,Wuhan,2005).

[3] Li Wenyun:Numerical simulation method for galloping of iced bundle conductor(Chongqing University,2009).

[4] Huang Tao:Study on nonlinear galloping theory for long conductors of power transmission lines(Huazhong University of Science and Technology,Wuhan,2005).

[5] Xia Zhengchun:Research on galloping and ice-shedding of ultra high-voltage transmission conductors(Huazhong University of Science and Technology,Wuhan,2008).

[6] Liu Caolan:Analysis of iced large-span transmission conductor galloping(Chongqing University,2009)