WRF 기상예측자료를 이용한 풍황분석 타당성 연구

Abstract

Wind resource assessment based on wind data derived from a Numerical Weather Prediction (NWP) model has been carried out in Jeju Island. Of NWP models, Weather Research and Forecasting (WRF) model was used for this investigation. Numerical contour map and Land Cover Map which were made in Korea were used for more accurate analysis. The meteorological data which is used in WRF model has been chosen as a Global Forecast System (GFS) file. The 10-min wind data was generated on the basis of the model dynamics and physics. The wind data predicted by WRF and WAsP(Wind Atlas Analysis and Application Program) was compared with the measured data at Pyeongdae and Udo, which is located in the northeastern part of Jeju Island. The result showed that the wind characteristics predicted by WRF model running were in good agreement with the measured wind characteristics. From this result, it may be possible to assess wind resource using WRF model whose original purpose is wind power forecasting. Though the predicted 10-min interval wind data did not match the measurements very well, the predicted wind characteristics such as annual and monthly mean wind speed roughly agreed with the real wind characteristics. That is, it may be well worth to analyze the wind data predicted by running WRF model when the measured wind data is not available or when a wind farm developer searches for a potential wind farm site before installing meteorological mast. It is needed to conduct more feasibility studies like this for various sites for the reliable result.