A STUDY OF THE CORRECTION METHOD OF TURBULENCE INTENSITY MEASURED BY USING DUAL SCANNING DOPPLER LIDARS

Jun Tanemoto; Tsenwei Lin; Kazuya Takahashi; Koji Sumida; Tetsuji Shiroeda

doi:10.24752/gre.2.0_17

GRE2022

DOI https://doi.org/10.24752/gre.2.0_17

Conference information

Host: Organizing Committee of Grand Renewable Energy 2022 International Conference

Name : Grand Renewable Energy 2022 International Conference

Date : December 13, 2022 - December 20, 2022

A STUDY OF THE CORRECTION METHOD OF TURBULENCE INTENSITY MEASURED BY USING DUAL SCANNING DOPPLER LIDARS

*Jun Tanemoto, Tsenwei Lin, Kazuya Takahashi, Koji Sumida, Tetsuji Shiroeda

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Keywords: Wind Energy, Site Assessments and Forecasting, offshore wind, wind measurement, scanning lidar, dual scan

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 17-

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Abstract

In this paper, wind measurements of Dual Scanning Lidar (DSL) were validated against met mast measurements. Although the wind speed and the wind direction show good agreement with the met mast measurements, the turbulence intensity (TI) underestimates the cup anemometer measurement. It is also found that the degree of underestimation is related to the gate length of the lidars. Then, the correction method of TI by using a 3D random wind field was proposed. By using the proposed method, the spatial averaging effect caused by the gate length was corrected. Finally, the corrected TI shows good agreement with the cup anemometer measurement.

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