Answers are grounded in this paper and cite their sources.
The Cabora Bassa-Apollo HVDC Transmission is the first UHV dc long distance transmission system using thyristor valves. The overvoltage protection and insulation co-ordination for the terminal stations of this systemaredescribed. It is shown, how the specific requirements of the thyristor valves for strict and reliable overvoltage protection have been solved by direct surge arrester protection with reasonable insulation levels of the valves and the other HVDC station equipment. The selection of post and suspension insulators used in the d.c. section of the HVDC station, which is fully outdoor, is described as well.
No takes yet. Share an insight, caveat, or question.
Heise et al. (1974) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: