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윤광용(Yoon Kwang Yong),유능수(Yoo Neung Soo),백인수(Paek In Su) 강원대학교 산업기술연구소 2008 産業技術硏究 Vol.28 No.1
A linear wind prediction program, WAsP, was employed to predict wind speed at two different sites located in complex terrain in South Korea. The reference data obtained at locations more than 7 kilometers away from the prediction sites were used for prediction. The predictions from the linear model were compared with the measured data at the two prediction sites. Two compensation methods such as a self-prediction error method and a delta ruggedness index (RIX) method were used to improve the wind speed prediction from WAsP and showed a good possibility. The wind speed prediction errors reached within 3.5% with the self prediction error method, and within 10% with the delta RIX method. The self prediction error method can be used as a compensation method to reduce the wind speed prediction error in WAsP.
윤광용(Yoon, Kwang-Yong),백인수(Paek, In-Su),유능수(Yoo, Neung-Soo) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.10
A linear wind prediction program, WAsP, was employed to predict wind speed at two different sites located in complex terrain in South Korea. The reference data obtained at locations more than 7 kilometers away from the prediction sites were used for prediction. The predictions from the linear model were compared with the measured data at the two prediction sites. Two compensation methods such as a self-prediction error method and a delta ruggedness index (RIX) method were used to improve the wind speed prediction from WAsP and showed a good possibility. The wind speed prediction errors reached within 3.5 % with the self prediction error method, and within 10% with the delta RIX method. The self prediction error method can be used as a compensation method to reduce the wind speed prediction error in WAsP.
실제 풍황 조건에 따른 풍력발전기의 민감도 분석방법 연구
윤광용(Yoon, Kwangyong),노주현(Rho, Joohyun),김현철(Kim, Hyunchul),이권희(Lee, Kwonhee) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
설계단계의 풍력발전시스템 하중계산은 20년이 넘는 시스템 수명과 효율을 결정하는 중요한 부분이다. 일반적인 규정서 기반의 설계하중 계산은 실제 풍황 조건인 발전기 상호 간섭, 설치 지형의 특성 등을 상세히 묘사하기 어렵다. 풍력발전기 설계 단계에서 검토된 평균풍속 또는 난류강도 등이 규정(IEC, GL 등)을 만족한다 하더라도 설계값과 실제값은 서로 다른 결과를 나타낼 수 있다. 본 연구에서는 기 설계된 풍력발전기가 최적 효율을 낼 수 있는 풍력단지의 풍황 특성(평균풍속과 난류강도 등)의 범위를 보다 정확하게 제시하여 설치되는 풍력발전기의 수명과 효율을 높이는 방법을 연구하였다. 이를 위하여 당사의 2MW급 IEC Class II-A로 설계된 직접 구동형 풍력발전기에 대해, 다양한 평균 풍속(7m/s~10m/s)과 난류강도(14%~20%)를 고려한 하중 계산을 수행하였다. 하중 분석을 통해 실제 풍황 조건에 따른 극한하중 산출 및 피로수명의 민감도를 검토하여 풍력발전기 운용의 풍속과 난류강도의 최적범위 제시하여 발전단지 설계에 활용할 수 있도록 하였다.
육상용 2㎿급 직접구동형 풍력발전기의 성능 민감도 분석
노주현(Joo Hyun Rho),윤광용(Kwang Yong Yoon),이권희(Kwon Hee Lee) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Load calculations for wind turbine system design are important to determine the efficiency of wind turbine system. Although mean wind speed or turbulence intensity satisfy the designed values based on the Regulations, the designed values can be different to the values on real wind conditions. To know the characteristics in sharply turned, the performance analysis and sensitivity calculations were carried out by applying the ranges of 7~10㎧ mean wind speed and 14~20% turbulence intensity about 2㎿ direct drive wind turbine of IEC class Ⅱ designed for onshore. The sensibility of Hyundai Rotem wind turbine changes rapidly in region Ⅱ on power curve diagram through a torque control to a pitch control. This results could be applied to the optimal control logic design by the load calculation results.