A207 日本の極値風速に関する一考察(風力エネルギー環境と今後の展開,OS2 自然エネルギー)

概要

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As of the end of 2007, wind power capacity became close to 94 GW all over the world. The United States, Spain, China and India recorded high increase of wind capacity last year. As to Japan, wind turbines have been suffering from typhoon attacks, lightning aggacks and high turbulence, which have acturally decelerated wind power development today. For example, in 2003 Miyako Island was attacked by a huge typhoon when all seven wind turbines were damaged or destroyed by the typhoon, with three turbines hit down to the ground, other threr lost blades. The keenest issue we are asked today is to develop "J-class wind models" which describe the characteristic of extreme winds in Japan in the same manner of IEC standard. The first approach is to study the past observed wind data. Considering meteorological and geographical conditions over Japan, statistical data were chosen at 50 meteorological stations out of 160. The value of Vref/V_<ave> and Ve50/Vref are higher than the IEC standard level. In this study, we developed typhoon simulation tools, and estimated Vref and the uncertainty of Vref at met-station in Japan using typhoon track data for past 50 year.
一般社団法人日本機械学会の論文
2009-06-28