http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
MCP방법을 이용한 장기간 풍속 및 풍력에너지 변동 특성 분석
현승건(Hyun Seung-Gun),장문석(Jang Moon-Seok),고석환(Ko Suk-Hwan) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.5
Wind resource data of short-term period has to be corrected a long-term period by using MCP method that Is a statistical method to predict the long-term wind resource at target site data with a reference site data. Because the field measurement for wind assessment is limited to a short period by various constraints. In this study, 2 different MCP methods such as Linear regression and Matrix method were chosen to compare the predictive accuracy between the methods. Finally long-term wind speed, wind power density and capacity factor at the target site for 20 years were estimated for the variability of wind and wind energy. As a result, for 20 years annual average wind speed, Yellow sea off shore wind farm was estimated to have 4.29% for coefficient of variation, CV, and-9.57%〜9.53% for range of variation, RV. It was predicted that the annual wind speed at Yellow sea offshore wind farm varied within±10%.
현승건(Hyun Seung-Gun),김건훈(Kim Keon-Hoon),허종철(Huh Jong-Chul) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.4
In this study, it is to verify the applicability for a simplified model(IEC61400-2, Design Require-ments for Small Wind Turbines, 2006-03) is the international standard is used to the structural design. In the design process of a wind turbine, the safety of a designed wind turbine is one of the most important factors. The simplified model can be used to determine the design load for small wind turbines. So, this paper has been re-evaluated a small wind turbine design loads that produced already. As a result, the material characteristic value(Rchar) of Blade, Rotor shaft and the tower are 90E6[N/㎡], 441E6[N/㎡] and 94E6[N/㎡]. Therefore, the value of the applied safety factor to each part of the survival probability of 95% are satisfied.
Site calibration이 풍력발전시스템 성능시험 불확도에 미치는 영향 연구
김건훈(Kim Keon-hoon),현승건(Hyun Seung-gun) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.2
A comparison study between two performance testing results, one is on the site calibration not needed and the other is needed, was proceeded for the understanding on the effect of site calibration on the complex terrain. As a result, it is revealed that all of uncertainty components is effected by the topographical features dramatically. And the maximum difference of uncertainty reached at around 8% of rated capacity of wind turbine. So, the site calibration is an effective method to remove the variable wind effect by the ground complexity and must be proceeded before the power performance testing of a wind turbine.
김건훈(Kim Keon-hoon),현승건(Hyun Seung-gun) 한국태양에너지학회 2010 한국태양에너지학회 논문집 Vol.30 No.6
The installed capacity of wind turbines in KOREA are growing and enlarging by the central government's support program. Thus, the importance of power performance verification and its uncertainty analysis are recognizing rapidly. This paper described the power testing results of a 3㎿ wind turbine and analysed an uncertainty level of measurements. The measured power curves are very closely coincide with the calculated one and the annual power production under the given Rayleigh wind speed distribution are estimated with the 3.6~12.7% of uncertainty but, in the dominant wind speed region as 7~8㎧, the uncertainty are stably decreased to 6.3~5.3%