A novel approach for aeroelastic wind tunnel modelling of cables

The behaviour of transmission line cables under severe boundary layer winds is examined. In this context, the paper subject concerned the examination of the effect of scale of turbulence on the response of a line-like structure (cable model) through wind tunnel tests and the comparison of wind tunnel tests with theoretical predictions made through the statistical method using influence lines. Consistency with theory allowed the development of a new modeling approach to conductor systems using a distorted horizontal length scale (span wise) to accommodate these systems in the wind tunnel. Transverse and oblique wind incidences were tested. From the results obtained in the experimental work, it is apparent that the new modeling approach to conductor systems in wind tunnels is a valid technique. It is necessary, however, that a correction be made in the values of the variance measured in the distorted model.