A Very Stable Calculation Method for Ion Flow Field of HVDC Transmission Lines

This paper describes a new, stable method of calculating ion flow fields in the presence of wind. The principle of the new method is to use the integral form of the current continuity equation instead of Poisson's equation for computing space potential. It has been demonstrated that this new method can give consistent results for any high boundary value. The calculated profiles of electric field and ion current density on the ground have been compared and discussed with the measured ones for the artificial wind conditions under very high current density and the UHV DC test transmission line.