The influence of the opening angle of conductor surface on the drag coefficient

In this paper, the wind resistance coefficient of low-pressure steel core aluminum wire with different opening angle is measured by wind tunnel test under different wind speed conditions. The results show that when the wind speed is below 35m/s, the wind resistance coefficient of the wires with different structural forms is large. When the wind speed is above 35m/s, the drag coefficient of the ordinary ACSR is the largest, followed by the steel core forming aluminum stranded wire. In the four open-angle wires, the overall drag resistance coefficient decreases as the opening angle increases, and the drag coefficient of the corresponding conductor is the smallest when the opening angle is 90 degrees.