풍력기상자원지도 산출방법에 따른 풍력자원 비교

Abstract

Two types of wind resource maps for Korea were developed. The first wind resource map was a TMY (Typical Meteorological Year) wind resource map based on the WRF (Weather Research and Forecasting) model using the NCEP FNL for the TMY period from 1998 to 2009. The second wind resource map was a KLAPS (Korea Local Analysis and Prediction System) wind resource map based on the WRF model using the high resolution KLAPS reanalysis data of a continuous period from 2010 to 2013. A comparative verification was carried out using the observation data of the ASOS sites. The KLAPS wind resource map was improved by 17.9% (0.24 m sSUP-1/SUP, mean bias) and 10.6% (0.24 m sSUP-1/SUP, mean RMSE) compared to the TMY wind resource map. The wind speed verification at an 80 m height of the KLAPS wind resource map was conducted for the Gochang site (onshore) and HeMOSUSUP-1/SUP site(offshore). As a result, the bias was 0.5 m sSUP-1/SUP and -0.2 m sSUP-1/SUP, and the RMSE was 2.1 m sSUP-1/SUP and 2.0 m sSUP-1/SUP, respectively. The wind speed of the KLAPS wind resource map was strong in winter (onshore) and spring (offshore), and weak in summer. Moreover the wind speed during the daytime was stronger than that at night. The wind resource map depicted the average wind speed, maximum wind speed, prevailing wind direction, frequency of 3 ~ 25 m sSUP-1/SUP wind speed, and Weibull distribution in major wind farms for the development of wind energy.