Experimental Investigation and Theoretical Analysis on Galloping of Iced Conductors

Abstract:

The aerodynamic forces of two typical iced conductor models are obtained by high frequency balance technique in wind tunnel test. The effects of wind directions and turbulence intensity on aerodynamic forces coefficients are discussed. An analytical expression for predicting the galloping instability trends in arbitrary directions is derived. An aerodynamic model considering the dynamic swing is developed according to the quasi-steady theory. Galerkins procedure is employed to discrete the governing equations of transmission line, which is modeled as a suspended homogeneous elastic cable having a small equilibrium curvature and neglecting the shear deformation. The forth order Runge-Kutta method are applied to obtained the approximate numerical results of iced transmission line galloping.

• Periodical: Advanced Materials Research (Volumes 860-863)
• Pages: 1551-1558
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.860-863.1551
• Online since: December 2013
• Authors: Wen Yong Ma*, Xiao Na Li, Ming Gu
• Keywords: Galloping, Iced Conductors, Numerical Analysis, Theoretical Analysis, Wind Tunnel Test

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