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Converted Wave Energy Transmission, Storage and Integration

by Yoshio Masuda, Rykusheisha Co, Japan,
Michael E. McCormick, Rykusheisha Co, Japan,



Document Type: Proceeding Paper

Part of: Coastal Engineering 1986

Abstract:

Results of a number of full-scale studies of transmission, storage and integration of electricity resulting from wave energy conversion are discussed. These studies involved the floating system, KAIMEI, and the fixed systems at Sanze, Japan. The undersea transmission of electricity by an FRP armored cable over a period of several years was a success. After seven years exposure to salt water no alteration of the transmission capability of the cable was noted. Fluctuations in the electrical output were successfully smoothed by the flywheel effect of the turbine in conjunction with an AC-DC-AC conversion system, allowing the electricity produced by an induction generator to be transmitted to the local power grid. For smaller application of wave power, a lead-acid battery system in parallel with a Diesel-powered generator was found to be most suitable. This system of storage and integration could be used on remote islands where the power demand is relatively low. Finally, the use of dampertanks for energy smoothing was found to be ineffective.

Subject Headings: Electric power | Power transmission lines | Hydro power | Cables | Electrical systems | Water waves | Renewable energy | Japan | Asia

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