Abstract
The submarine power cables across Cook Strait are a part of the ±250 kV 600 MW d.c. transmission system from Benmore, in South Island of New Zealand, to Haywards in North Island. Two 24mile single-core gas-filled submarine cables convey the power from Fighting Bay in South Island to Oteranga Bay in North Island, and a third cable serves as a spare.The paper describes the cable route and site conditions and then deals with the cable design, manufacture and proving. Novel features are the use of a bend-restricting construction where the cable is laid on a rocky sea bed, and short-circuiting studs between sheath and armour to limit overvoltages developed across the anticorrosion serving. Because the water depth necessitates an internal gas pressure of 425lbf/in2, the sealing ends are so designed that the pressure porcelain is not in tension.The cable-laying equipment and methods are explained, and the repair of the fault which occurred during the laying of one of the cables is described.
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.
