풍력발전시스템의 블레이드에 작용하는 극한하중에 대한 난류의 영향 연구
A Study on the Effects of Turbulence to Ultimate Loads Acting on the Blade of Wind Turbine
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초록
This study has analysed the ultimate loads acting on a wind turbine which is operating in a high turbulent flow condition because the ultimate loads are critical factors on the safe design of wind turbine. Since wind flow on the most parts of Korean mountainous are strongly influenced by complex configurations of the topography, turbulence intensity on somewhere is so stronger than an international design standard. For this reason, the characteristics of turbulent wind data collected from actual sites were analyzed and used for the ultimate load evaluation of the wind turbine. With the 270 design load cases on the international standards, the differences of ultimate loads on the wind turbine operating in the standard or high turbulent wind condition are calculated and compared for the an enhanced knowledge of the safe design basis. As are result, it is revealed the specific ultimate loads are strongly affected by the high turbulent wind conditions, thus the characteristics of turbulent flow must be considered during the design of wind turbine.
Abstract
This study has analysed the ultimate loads acting on a wind turbine which is operating in a high turbulent flow condition because the ultimate loads are critical factors on the safe design of wind turbine. Since wind flow on the most parts of Korean mountainous are strongly influenced by complex configurations of the topography, turbulence intensity on somewhere is so stronger than an international design standard. For this reason, the characteristics of turbulent wind data collected from actual sites were analyzed and used for the ultimate load evaluation of the wind turbine. With the 270 design load cases on the international standards, the differences of ultimate loads on the wind turbine operating in the standard or high turbulent wind condition are calculated and compared for the an enhanced knowledge of the safe design basis. As are result, it is revealed the specific ultimate loads are strongly affected by the high turbulent wind conditions, thus the characteristics of turbulent flow must be considered during the design of wind turbine.
참고문헌 (10)
- Kim, K. H, "A Study on the Formulation of Extreme Load and Sensitivity Analysis of Blade Stiffness Distribution of Wind Turbine System", pp.2009
- Ko, K. N., "Wind power engineering guide", pp.39~52 (2006), munundang
- IEC, "IEC 61400-1 3rd Ed. Wind turbines-Part 1 : Design requirements", International Electro- technical Commission, 21~45 (2005)
- IEC, "IEC 61400-2 2nd Ed. Wind turbines-Part 2 : Design requirements for small wind turbines", International Electrotechnical Commission, 43~65 (2006)
- Ervin Bossanyi, "GH Bladed - Theory Manual" (2009), Garrad Hassan and Partners Ltd
- Ervin Bossanyi, "GH Bladed - User's Manual" (2009), Garrad Hassan and Partners Ltd
- Tony Burton, "WIND ENERGY HANDBOOK" (2001), JOHN WILEY & SONS,LTD
- Landers Randermakers, "European Wind Turbine StandardsⅡ" (1998), EC, Brussel
- David A. Spera, "Wind turbine technology", pp.487~506 (1994), ASME Press
- J. C. Kaimal, "Spectral characteristics of surface-layer turbulence", Q. J. R. Meteorol. Soc, 98, pp.563~598 (1972)