Analysis on Wind-Induced Vibration Dynamic Responses of Transmission Tower-Line System

Abstract:

Tower-line system of overhead transmission line are sensitive to wind. Therefore, dynamic effect of wind load should be taken into consideration, for instance, wind-induced vibration coefficient. There might be some errors in the calculation of the coefficient in accordance with ‘Load code for the design of building structures’, for its ignoring the irregular figure, scattered masses and coupling effect of tower-line system. Tower-line system is set up in virtual environment, with tower-line coupling considered, and research wind-induced vibration dynamic responses under Davenport wind speed spectrum. Random vibration theory was applied to calculate the coefficient. Whole tower was divided by hight, and calculated segment’s the wind-induced vibration coefficient seprately. Compare the coefficient from Load Code and random vibration theory, the latter with tower-line coupling effect and tower figure considered, is close to the actual.

• Periodical: Applied Mechanics and Materials (Volume 327)
• Pages: 284-289
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.327.284
• Online since: June 2013
• Authors: Xiao Guang Hu, Jing Bo Yang, Feng Li Yang
• Keywords: Dynamic Response, Steel Tubular Tower, Transmission Tower Line System, Wind-Induced Vibration Coefficient

References

[1] Yang J.B, Yang. F.L: Calculation of Wind-induced Dynamic Load of Transmission Tower Considering Coupled Vibration Affection of Conductors. Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific. 2010.3.

DOI: 10.1109/appeec.2010.5449026

[2] Xie .Q, Zhang. Y and Li. J: Investigation on Tower Collapses of 500 kV Renshang 5237 Transmission Line Caused by Downburst. Power System Technology, Vol. 30 No. 10.

[3] E.Savory, Gerard A.R. Parke and M. Zeinoddini: Modelling of tornado and microburst-induced wind loading and failure of a lattice transmission tower.Engineering Structures (2001), Volume 23, 365-375.

DOI: 10.1016/s0141-0296(00)00045-6

[4] A.Y. Shehata A.A. El Damatty and E. Savory: Finite element modeling of transmission line under downburst wind loading. Finite Elements in Analysis and Design. Vol.42, Issue 1, 2005(10), 71-89

DOI: 10.1016/j.finel.2005.05.005

[5] Yang .J.B, Li. Z and Jiang. J. Dynamic Characteristics of Wind-induced Coupled Vibration Between Conductor and Tower of Transmission Line. Journal of Vibration, Measurement & Diagnosis. 2008(2):147-150.