地域気象モデルと地理情報システムを利用した洋上風力賦存量の評価

概要

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In this study, offshore wind power potential in the supply area of Tokyo Electric Power Company (TEPCO) was investigated by using mesoscale model and geographical information system (GIS). Following results were obtained. 1) The mesoscale model can predict the annual mean wind speed with the error of 4.8%. 2) As Choshi is located at the tip of a cape, annual mean wind speed at 10km offing exceeds 7.5m/s offshore Choshi, while it is only 5.7m/s at northern site. 3) Considering the area 50km from the shore, total theoretical potential reaches 277TWh/year accounting for 94% of the annual demand for TEPCO. 4) Imposing economical and social restrictions, the available potential becomes 94TWh/year, 99.6% of which is exploited by floating foundation. 5) Floating foundation should be developed so that it will fit the water depth between 20m and 200m. 6) When service life of the foundation is set to more than 50 years, the offshore wind farm in this region will be profitable.
一般社団法人日本風工学会の論文