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http://dx.doi.org/10.9765/KSCOE.2012.24.5.326

Error analysis on the Offshore Wind Speed Estimation using HeMOSU-1 Data  

Ko, Dong Hui (Department of Civil and Environmental Engineering, Wonkwang University)
Jeong, Shin Taek (Department of Civil and Environmental Engineering, Wonkwang University)
Cho, Hongyeon (Marine Environments and Conservation Research Division, Korea Institute of Ocean Science and Technology)
Kim, Ji Young (KEPCO Research Institute)
Kang, Keum Seok (KEPCO Research Institute)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.24, no.5, 2012 , pp. 326-332 More about this Journal
Abstract
In this paper, error analyses on the calculation of offshore wind speed have been conducted using HeMOSU-1 data to develop offshore wind energy in Yeonggwang sea of Korea and onshore observed wind data in Buan, Gochang and Yeonggwang for 2011. Offshore wind speed data at 98.69 m height above M.S.L is estimated using relational expression induced by linear regression analysis between onshore and offshore wind data. In addition, estimated offshore wind speed data is set at 87.65 m above M.S.L using power law wind profile model with power law exponent(0.115) and its results are compared with the observed data. As a result, the spatial adjustment error are 1.6~2.2 m/s and the altitude adjustment error is approximately 0.1 m/s. This study shows that the altitude adjustment error is about 5% of the spatial adjustment error. Thus, long term observed data are needed when offshore wind speed was estimated by onshore wind speed data. because the conversion of onshore wind data lead to large error.
Keywords
offshore wind energy; wind profile; power law; HeMOSU-1; power law exponent;
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