Analysis of corona losses on monopolar dc transmission lines

This paper presents a charge-simulation-based method to solve the equations describing the ionized field around monopolar transmission lines. The method is applied for calculating the corona power-loss and ground-level current-density profile of the conductor bundles of two and three subconductors. Different orientations of the conductor bundle is sought to investigate how the ground-level current-density profile is influenced by the orientation of the bundle with respect to the ground plane. The change of the corona onset voltage from point-to-point on each subconductor is taken into account. The calculated corona power-loss and ground-level current-density of bundle conductors agreed fairly with those measured experimentally for a laboratory model. (C) 1998 Elsevier Science S.A.