JP7403690B2 - 複雑地形においてLiDARで高速の風の流れを測定するためのシステムおよび方法 - Google Patents
複雑地形においてLiDARで高速の風の流れを測定するためのシステムおよび方法 Download PDFInfo
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Description
データ同化の近似
風の流れの乱流
Claims (15)
- 複雑形状を有する地形の上方の一組の異なる高度における風の流れを、前記高度のうちの各高度における視線速度の一組の測定値から求めるための風流検知システムであって、前記風流検知システムは、
前記高度のうちの各高度ごとに前記地形の上方の見通し線ポイントにおける前記視線速度の一組の測定値を受けるように構成された入力インターフェイスと、
プロセッサとを備え、前記プロセッサは、
前記高度のうちの各高度ごとの速度場を、前記視線速度の測定値に適合する一組の1つまたは複数の凸形状で前記地形の形状を近似したものの上方の前記速度場のデータ同化に基づいて、推定し、
前記高度のうちの各高度における水平速度を、前記推定した速度場の鉛直速度の対応する水平導関数で補正された、対応する前記視線速度の水平投影として、推定するように、構成され、前記風流検知システムはさらに、
前記高度のうちの各高度における前記推定した水平速度をレンダリングするように構成された出力インターフェイスを備え、
前記凸形状は円筒である、風流検知システム。 - 前記一組の凸形状は、直径が異なる少なくとも2つの円筒を含む、請求項1に記載の風流検知システム。
- 前記データ同化は、入口速度場の値と、前記一組の凸形状のうちのある凸形状の寸法とによって規定された境界条件の組み合わせに対する多変数サーチを実行する、請求項1に記載の風流検知システム。
- 前記多変数サーチは、前記風の流れの力学に従う前記視線速度の測定値をもたらす、前記入口速度場の値と前記凸形状の半径とを決定する、請求項3に記載の風流検知システム。
- 前記データ同化は複数のラプラス方程式を解くことによって実行され、前記ラプラス方程式の各々は、前記入口速度場の特定の値および前記凸形状の前記半径について前記風の流れの力学を規定する、請求項4に記載の風流検知システム。
- 前記プロセッサは、前記速度場を、前記データ同化によって求めた前記速度場に写像関数を適用することによって推定するように構成されている、請求項1に記載の風流検知システム。
- 前記写像関数は、非凸地形について求めた速度場と凸形状によるその近似との差を最小にするように訓練されたニューラルネットワークである、請求項6に記載の風流検知システム。
- 前記視線速度の前記測定値は、円錐上の、地上ベースのLiDARによって測定され、各高度ごとの前記円錐上の前記測定値は円の上の測定値であり、前記円の上の測定値は、前記円の円周上の異なる見通し線ポイントで測定された異なる角度方向における前記視線速度の複数の測定値と、前記円の中心で測定された鉛直方向における前記視線速度の1つの測定値とを含む、請求項1に記載の風流検知システム。
- 前記高度のうちの各高度における前記鉛直速度の前記水平導関数は、対応する前記高度について前記LiDARの前記測定値を定める前記円錐の前記円の前記中心における前記鉛直測度の勾配を規定する、請求項8に記載の風流検知システム。
- 前記高度のうちの各高度ごとの前記速度場は、前記円錐の内側および外側における前記風の速度の値を含む、請求項1に記載の風流検知システム。
- 前記高度のうちの各高度における前記推定した水平速度に基づいて風力タービンを制御する、前記風力タービンのコントローラをさらに備え、前記風力タービンは、請求項1に記載の風流検知システムに作動的に接続される、請求項1に記載の風流検知システム。
- 複雑形状を有する地形の上方の一組の異なる高度における風の流れを、前記高度のうちの各高度における視線速度の一組の測定値から求めるための風流検知方法であって、前記方法は、前記方法を実現する格納された命令と結合されたプロセッサを使用し、前記命令は、前記プロセッサによって実行されると前記方法のステップを実行し、前記ステップは、
前記高度のうちの各高度ごとに前記地形の上方の見通し線ポイントにおける前記視線速度の一組の測定値を受けるステップと、
前記高度のうちの各高度ごとの速度場を、前記視線速度の測定値に適合する一組の1つまたは複数の凸形状で前記地形の形状を近似したものの上方の前記速度場のデータ同化に基づいて、推定するステップと、
前記高度のうちの各高度における水平速度を、前記推定した速度場の鉛直速度の対応する水平導関数で補正された、対応する前記視線速度の水平投影として、推定するステップと、
前記高度のうちの各高度における前記推定した水平速度を出力するステップとを含み、
前記凸形状は円筒である、風流検知方法。 - 前記一組の凸形状は、直径が異なる少なくとも2つの円筒を含む、請求項12に記載の風流検知方法。
- 前記視線速度の前記測定値は、円錐上の、地上ベースのLiDARによって測定され、各高度ごとの前記円錐上の前記測定値は円の上の測定値であり、前記円の上の測定値は、前記円の円周上の異なる見通し線ポイントで測定された異なる角度方向における前記視線速度の複数の測定値と、前記円の中心で測定された鉛直方向における前記視線速度の1つの測定値とを含む、請求項13に記載の風流検知方法。
- 前記高度のうちの各高度における前記鉛直速度の前記水平導関数は、対応する前記高度について前記LiDARの前記測定値を定める前記円錐の前記円の前記中心における前記鉛直測度の勾配を規定する、請求項14に記載の風流検知方法。
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US4735503A (en) | 1985-06-05 | 1988-04-05 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft-Und Raumfahrt | Method for determining the direction and speed of wind in the atmosphere |
JP2014506327A (ja) | 2011-01-05 | 2014-03-13 | レオスフェール | 流体の移動の半径方向速度の遠隔測定から該流体の運動を決定する方法及び装置 |
DE102014216368A1 (de) | 2014-08-18 | 2016-02-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Mehrarmiges lidar-system |
US20190293836A1 (en) | 2018-03-20 | 2019-09-26 | Mitsubishi Electric Research Laboratories, Inc. | System and method for sensing wind flow passing over complex terrain |
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US4735503A (en) | 1985-06-05 | 1988-04-05 | Deutsche Forschungs- Und Versuchsanstalt Fur Luft-Und Raumfahrt | Method for determining the direction and speed of wind in the atmosphere |
JP2014506327A (ja) | 2011-01-05 | 2014-03-13 | レオスフェール | 流体の移動の半径方向速度の遠隔測定から該流体の運動を決定する方法及び装置 |
DE102014216368A1 (de) | 2014-08-18 | 2016-02-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Mehrarmiges lidar-system |
US20190293836A1 (en) | 2018-03-20 | 2019-09-26 | Mitsubishi Electric Research Laboratories, Inc. | System and method for sensing wind flow passing over complex terrain |
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