ANALYSIS OF CORONA LOSSES ON MONOPOLAR DC TRANSMISSION-LINES

This paper presents a charge-simulation-based method to solve the equa tions describing the ionized field around monopolar transmission lines . The method is applied for calculating the corona power-loss and grou nd-level current-density profile of the conductor bundles of two and t hree 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-l oss and ground-level current-density of bundle conductors agreed fairl y with those measured experimentally for a laboratory model. (C) 1998 Elsevier Science S.A.