A Laboratory Study on the Ion-Flow Field Model of the DC Wires in Stable Wind

Although transverse wind exerts an important influence on the distribution of the ion current density under HVDC transmission lines, very few experiments involving stable wind have been used to verify the numerical model. To overcome the variability of natural wind, a low-speed wind tunnel was used to produce stable wind in this research. An experimental platform was set up in the wind tunnel, to measure the ion current density of dc wires. Based on the experiment, transverse wind exerted a significant influence over the distribution of the ion current. The numerical model was discussed and the results showed reasonable agreement with the measured values for different wind speeds.