Abstract
A possible design is described for a 230 kV duct line incorporating three tubular conductors supported in a duct 2.5 m in diameter with air at atmospheric pressure as the dielectric. Thermal models have been developed to facilitate the computation of temperature and current rating. With the duct line completely buried, it is found that the duct/soil-interface temperature is the limiting feature on current-carrying capacity, whereas, with the duct water cooled, or situated above the ground surface, the conductor temperature is limiting. For buried systems, the rating is only adequate, but with above-ground installation or intense water cooling of the buried duct, currents of the order of 10000 A may be achieved.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the Institution of Electrical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
