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KMID : 1024520130220101305
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Journal of the Environmental Sciences
2013 Volume.22 No. 10 p.1305 ~ p.1316
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Long-Term Wind Resource Mapping of Korean West-South Offshore for the 2.5 GW Offshore Wind Power Project
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Kim Hyun-Goo
Jang Moon-Seok
Ko Suk-Hwan
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Abstract
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A long-term wind resource map was made to provide the key design data for the 2.5 GW Korean West-South Offshore
Wind Project, and its reliability was validated. A one-way dynamic downscaling of the MERRA reanalysis meteorological
data of the Yeongwang-Gochang offshore was carried out using WindSim, a Computational Fluid Dynamics based wind
resource mapping software, to establish a 33-year time series wind resource map of 100 m x 100 m spatial resolution and
1-hour interval temporal resolution from 1979 to 2012. The simulated wind resource map was validated by comparison with
wind measurement data from the HeMOSU offshore meteorological tower, the Wangdeungdo Island meteorological tower,
and the Gochang transmission tower on the nearby coastline, and the uncertainty due to long-term variability was analyzed.
The long-term variability of the wind power was investigated in inter-annual, monthly, and daily units while the short-term
variability was examined as the pattern of the coefficient of variation in hourly units. The results showed that the inter-annual variability had a maximum wind index variance of 22.3% while the short-term variability, i.e., the annual standard deviation of the hourly average wind power, was 0.041±0.001, indicating steady variability.
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KEYWORD
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Korean west-south offshore, HeMOSU offshore meteorological tower, Wind resource map, Dynamic downscaling, MERRA reanalysis data, WindSim, Long-term variability, Coefficient of variation
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