Experimental Investigation of Air Flow Velocity Profiles Effects on the Wires and Cables of Power Transmission Lines and Supporting Devices

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In this paper, experimental study of air force effect in harsh environmental condition on standard cables and wires which are recognized as electrical conductors in electricity transmission lines and/or as supporting devices for radio antennas, has been carried out. For this, four different types of cables including 20 & 63 KV, the wire for posts supporting and covered cable with distinct diameter and roughness corresponding to each one.
Experiments have been conducted in wind tunnel and measurements have been performed using hot wire anemometer. The velocities employed in this study are 17 and 24 meters per second representing the one in the severe wind and storm. The aim of the survey is actually consideration of mean velocity, drag coefficient and other cables characteristics in a stormy condition. Increasing turbulence and momentum of flow causes that the separated flow from the model surface stick again to it. According to the results, typically in all models except the covered cable, the drag coefficient below the velocity of is less than 17 m/s. It is conclusively correct to say that 20 KV pattern could be used in the corresponding velocities.

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Journal of Solid and Fluid Mechanics
Volume 2, Issue 1 - Serial Number 1
March and April 2012
Pages 83-97

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