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김현기(Kim Hyeon-Gi),김병민(Kim Byeong-Min),백인수(Paek In-Su),유능수(Yoo Neung-Soo),김현구(Kim Hyun-Goo) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.5
In this study we performed a sensitivity analysis to see how the true north error of a wind direction vane installed to a meteorological mast affects predictions of the annual-average wind speed and the annual energy production. For this study two meteorological masts were installed with a distance of about 4 km on the ridge in complex terrain and the wind speed and direction were measured for one year. Cross predictions of the wind speed and the AEP of a virtual wind turbine for two sites in complex terrain were performed by changing the wind direction from -45° to 45° with an interval of 5°.A commercial wind resource prediction program WindPRO was used for the study. It was found that the prediction errors in the AEP caused by the wind direction errors occurred up to more than 20% depending on the orography and the main wind direction at that site.