スキャニングドップラーライダーの精度検証と風況計測への応用

• Published in: 風力エネルギー Vol. 42; no. 1; pp. A_7 - A_16
• Main Authors: ゴイト, プラカス ジェイ, 山口, 敦, 石原, 孟
• Format: Journal Article
• Language: Japanese
• Published: 一般社団法人 日本風力エネルギー学会 2018
• ISSN: 0387-6217; 1884-457X
• DOI: 10.11333/jwea.42.1_A_7

This study evaluates scanning Doppler Lidar-based wind field measurement and analysistechniques for wind energy applications. The Lidar measurements are first validated againstmeasurements from existing V1 Lidar. It is found that the availability of 20% (30 data per 10 minutes) issufficient to produce fairly good 10 minutes averaged wind speed and direction. The vertical profilemeasurements for wind blowing from land and that from sea are then performed using DBS configuration.The averaged wind speed for the former is lower than for the later. Two more scan modes, RHI and PPI,are employed to investigate the effect of coastal terrain on the near shore velocity profiles and tocharacterize the wind turbine wake. An internal boundary layer develops from the shore and persists up to2000 m offshore. Lidar measurement data are also used to validate numerical simulations by a mesoscalemodel. The measured and predicted wind speeds agree well up to the height of 500 m. Finally,measurements of flow field around wind turbine shows the velocity deficit in the wind turbine wake andagree with those predicted by a wake model.