Analysis of the distorted scaling factor in wind tunnel modeling of power transmission line system
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Abstract:
Because of the limitation of the model making and the existing wind tunnel’s size, it is difficult to keep the line and tower in the same scaling factor in developing the aeroelastic model of the power transmission lines system, and a distorted scaling factor is needed in span length of the lines. With the instance of a 1 000 kV twocircuit power transmission lines, the finite element analysis under the alongwind load in time history is conducted with keeping the tower in the same and the line scaling factor being 1, 0.5 and 0.25 respectively. The results show that the response of the power transmission lines systems keep in the same, and then the windinduced vibration of the distorted model in the wind tunnel test can actually reflect the response of the power transmission lines system under the wind load.
