Monopolar Corona on Bundle Conductors

Method of local characteristics for calculating electric field and ion current of HVDC transmission lines with transverse wind

“…The results have shown that the total corona losses increased with wind speed for the bipolar model while the change could be neglected for the conductor‐to‐plane arrangement at low wind speed. However, the increase of the corona loss was also observed in [2, 3] for the unipolar model with a longer gap between the conductor and plane. It was explained by the fact that a larger number of ions were blown away from the inter‐electrode space when the electric field was weak.…”

“…For the unipolar case, the increase of the corona current has been measured in the experiment [2, 3]. It becomes more complicated for the bipolar lines and no in‐depth analysis has been made.…”

“…Therefore, the ion current of the left wire is reduced at first with low wind speed. After the positive and negative ions are completely ‘decoupled’ by the wind at the left pole, the total (only negative) current will grow such as the unipolar case [2, 3].…”

A new approach to the space-charge problem

“…There is now a relatively large literature on the space-charge problem. Early references include Townsend (1914), Felici (1963), Atten (1968) and Khalifa (1968) with more recent work by Janischewskyj & Gela (1979), Abdel-Salam (1982, 1983, Okubo et al (1982), Sunaga & Sawada (1980), S Hutton (1986). In much of the earlier work many approximations were made concerning the distribution of the field lines.…”