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Hawaii Deep Water Cable Program, phase II : conceptual design study : integrated control system for the HDWC cable laying

Item Summary

Title: Hawaii Deep Water Cable Program, phase II : conceptual design study : integrated control system for the HDWC cable laying
Authors: Makai Ocean Engineering, Inc.
Keywords: cable
LC Subject Headings: Electric cables
Cables, Submarine--Hawaii
Electric power transmission--Hawaii
Electric lines--Hawaii
Issue Date: Mar 1986
Publisher: Makai Ocean Engineering, Inc.
Citation: Makai Ocean Engineering, Inc. 1986. Hawaii Deep Water Cable Program, phase II: conceptual design study: integrated control system for the HDWC cable laying. Honolulu (HI): Makai Ocean Engineering, Inc.
Abstract: The Hawaii Deep Water Cable Program has been established to evaluate and resolve the technical problems associated with laying a power cable from the island of Hawaii to the island of Oahu in the State of Hawaii. This cable, 250km (150m) long, is to be laid at a maximum depth of 2135m (7000ft) under design seas of 2.5m (8ft) and surface currents up to 1.5m/s (3kts). One of the many problems associated with this task is the integrated control system for the deployment vessel, the subject of this study. The intent of this study is to provide a conceptual design for an integrated control system that identifies its basic method of operation, equipment required, and to determine potential problem areas. The main objective of the control system is to promptly lay the cable on the bottom, properly tensioned and properly located. In general, this is achieved by accurately measuring a variety of cable and vessel parameters, monitoring the vessel location and controlling the cable payout rate and the vessel position. In conclusion, a control system that can properly position and tension the cable for the Hawaii program is possible. Most of the components for the system are commercially available with the exception of the surface cable angle measurement. The cable lay and control will involve added complexities because of the depth, cable dynamics, path width and bottom slopes; these should be tested in the HDWC demonstration program.
Pages/Duration: 207 pages
Appears in Collections:The Geothermal Collection

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