DEVELOPMENT OF WRF-OBSERVATION HYBRID METHOD FOR ESTIMATION OF HUB-HEIGHT OFFSHORE WIND SPEED
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- NAKASATO Ren
- 神戸大学 大学院海事科学研究科
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- OHSAWA Teruo
- 神戸大学 大学院海事科学研究科
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- SUGIYAMA Yasuhiro
- 神戸大学 大学院海事科学研究科（研究当時）
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- KOZAI Katsutoshi
- 神戸大学 大学院海事科学研究科
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- SHIMADA Susumu
- 産業技術総合研究所 福島再生可能エネルギー研究所
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- TAKEYAMA Yuko
- 東京海洋大学 学術研究院 海洋資源エネルギー学部門
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- NAKAMURA Satoshi
- 港湾空港技術研究所 沿岸環境研究領域
Bibliographic Information
- Other Title
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- WRF-現場観測値併用型ハブ高度洋上風速推定手法の開発
- WRF-ゲンバ カンソクチ ヘイヨウガタ ハブ コウド ヨウジョウ フウソク スイテイ シュホウ ノ カイハツ
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Abstract
This study proposes the WRF-observation hybrid method as a method to estimate wind-turbine hub-height wind speed from surface wind speed over the sea surface, and discusses the validity and problems of the method in comparison with a vertical one-dimensional method using the MOST-EKMAN model. The validation was conducted using in-situ measurements at the pier of the Hazaki Oceanographical Research Station in Kamisu, Ibaraki Prefecture. For winds from the sea sector, the WRF-observation hybrid method can estimate wind speed with a bias of 3.83 %, RMSE of 15.05 % and correlation coefficient of 0.95, which indicate higher accuracies than the MOST-EKMAN method and raw output of WRF. It is also found that the WRF-observation hybrid method tends to overestimate wind speed, and the main cause is that WRF exhibits too large vertical shears for winds from the land sector. In particular, this tends to occur in stable atmospheric conditions on the Hazaki pier.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 74 (2), I_952-I_957, 2018
Japan Society of Civil Engineers