成果報告書詳細
管理番号20120000000920
タイトル*平成23年度中間年報 風力等自然エネルギー技術研究開発/次世代風力発電技術研究開発/基礎・応用技術研究開発(数値シミュレーション技術を用いた風車性能評価技術等の国際標準化に係る研究開発)
公開日2012/8/9
報告書年度2011 - 2011
委託先名国立大学法人東京大学、国立大学法人九州大学応用力学研究所、株式会社風力エネルギー研究所
プロジェクト番号P04002
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:
要約
1. 本事業で取り扱う数値サイトキャリブレーション(NSC)による風車性能評価法とは、IEC61400-12-1:風車の性能計測方法(2005)に記載されている風況観測塔を用いた方法に代わり、風車に流入する風速を数値シミュレーションにより予測する手法である。NSC は複雑な地形において風車に流入する風速・風向を数値シミュレーションにより予測し、そのデータを参照風速とされる地点観測データとの相関関数により補正を行うことで風車位置における風を推定し、風車のパワーカーブを評価する手法である。
英文要約Title: Research and Development of New Energy Technology / Research and Development of Next-Generation Wind Power Generation Technology / Research and Development of International Standardization on Power performance verification of electricity producing wind turbines based on numerical site calibration.(FY2010-2012) , FY2011 Annual Report
The goal of this project is to propose the international standard document “Power performance verification of electricity producing wind turbines based on numerical site calibration.” The numerical site calibration will allow a site calibration after the erection of the wind farm, based on numerical modeling. This numerical site calibration will replace the site calibration requirements of the IEC 61400-12-1, after which the rest of the IEC 61400-12-1 may be applied. The main effort will focus on validating the models and defining criteria for acceptable models based on this validation.In this study, as a site of complex terrain for evaluation of CFD, a wind farm site at Higashiizu has been selected. Higashiizu site, the measurement of wind in wind power guidelines NEDO project has been carried out over three years through fiscal 2007. In the wind measurements campaign, high-speed sampling data of wind speed using the ultrasonic anemometer at the 30.5 magl has been obtained. This site is one of the most difficult site for the evaluation of wind speed over the terrain by CFD simulation.
In this year, flow measurements and flow visualization over the topography model of Higashiizu (5m of the diameter) which is the scale of 1/1667 have been carried out in the large scale boundary layer wind tunnel. In the last year, to evaluate the effects on the ruggedness of complex topography, a smooth surface without roughness has been selected. In this year, to evaluate the effect of roughness, the flow measurements over a model with roughness has been carried out. The measurement conditions were chosen in two prevailing wind directions clarified by NEDO project and the measurement points were selected at the meteorological mast, the wind turbine locations and the meteorological station. The hot wire anemometer was used to determine the averaged wind speed, turbulence intensity and spectrum of the wind. In addition, the distribution of averaged wind speed and directional fluctuation of wind in the wind direction bins were clarified by use of NEDO guideline data.The numerical simulation of airflows over the Higashiizu site and the Bolund site was performed using the Large-Eddy Simulation (LES) technique. At the Higashiizu site, the surface roughness was also considered. The obtained results were compared with those of the wind tunnel experiment. As a result, good coincidence was obtained. Furthermore, in order to attain improvement in the speed of calculation, parallelization by GPU or multi-CPU was considered.And We submit the technical report of our project to IEC. And we presented about our project in IEA task31 Wakebench.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る