低风速风电场风电机组的粗糙度取值研究
|
摘要
基于风资源分析软件WAsP中的粗糙度理论,推导风电机组粗糙度的计算公式,通过与建立风电机组模型的结果比较验证公式有效性,据此分析低风速风电场中风电机组粗糙度的影响因素,结果表明,设置风电机组粗糙度和建立风电机组模型对发电量的影响机理不同,风电机组的粗糙度与风电场平均风速、叶轮直径和轮毂高度呈正相关,与风电机组额定风速和风电机组间距呈负相关。
Based on the roughness theory of wind energy analysis software WAsP,the roughness calculation expression for wind turbine generator(WTG)is derived and the expression is validated by comparing with the results of WTG built model. Then the roughness factors of WTG are analyzed for low wind speed farm. It's revealed that the mechanism of setting WTG roughness is different from that of building WTG model. WTG roughness is positively correlated with average wind speed of wind farm,WTG vane diameter and hub height. However,the roughness is correlated negatively with rated wind speed and distance between WTGs.
Based on the roughness theory of wind energy analysis software WAsP,the roughness calculation expression for wind turbine generator(WTG)is derived and the expression is validated by comparing with the results of WTG built model. Then the roughness factors of WTG are analyzed for low wind speed farm. It's revealed that the mechanism of setting WTG roughness is different from that of building WTG model. WTG roughness is positively correlated with average wind speed of wind farm,WTG vane diameter and hub height. However,the roughness is correlated negatively with rated wind speed and distance between WTGs.
引文
[1] Monin A S,Obukhov A M. Osnovnye zakonomernosti turbulentnogo peremeshivanijav prizemnom sloe atmosfery(Basic laws of turbulent mixing in the atmosphere near the ground)[J]. Trudy geofiz. inst. AN SSSR,1954,24(151):163—187.
[2] Lettau H. Note on aerodynamic roughness-parameter estimation on the basis of roughness-element description[J]. Journal of Applied Meteorology,1969,8:828—832.
[3] Bou-Zeid,E.,C. Meneveau,M. B. Parlange. 2004:Large-eddy simulation of neutral atmospheric boundary layer flow over heterogeneous surfaces:Blending height and effective surface roughness[J]. Water Resour. Res.,40,W02505,DOI:10.1029/2003WR002475.
[4] WAsP帮助文件[EB/OL]. www.wasp.dk,2016-11-02.[4] WAsP help document[EB/OL]. www.wasp.dk,2016-11-02.
[5] Wieringa J. Does representative wind information exist?[J]. Wind Engineering,1996,65:1—12.
[6]王丰,刘德有,曾利华,等.大型风电场风机最优布置规律研究[J].河海大学学报:自然科学版,2010,38(4):472—478.[6] Wang Feng, Liu Deyou, Zeng Lihua, et al.Characteristics of optimal placement of wind turbines in large scale wind farms[J]. Journal of Hohai University(Natural Sciences),2010,38(4):472—478.
[7]李军,胡非,刘磊,等.风能资源评估中地表粗糙度的研究[J].能源科学,2011,33(12):2341—2348.[7] Li Jun,Hu Fei,Liu Lei,et al. On estimation of surface roughness for wind energy resources assessment[J].Resources Science,2011,33(12):2341—2348.
[8]宫靖远,贺德馨,孙如林,等.风电场工程技术手册[M].北京:机械工业出版社,2004,36—37.[8] Gong Jingyuan, He Dexin, Sun Rulin, et al.Engineering technical manual for wind farm[M].Beijing:Machinery Industry Press,2004,36—37.
[2] Lettau H. Note on aerodynamic roughness-parameter estimation on the basis of roughness-element description[J]. Journal of Applied Meteorology,1969,8:828—832.
[3] Bou-Zeid,E.,C. Meneveau,M. B. Parlange. 2004:Large-eddy simulation of neutral atmospheric boundary layer flow over heterogeneous surfaces:Blending height and effective surface roughness[J]. Water Resour. Res.,40,W02505,DOI:10.1029/2003WR002475.
[4] WAsP帮助文件[EB/OL]. www.wasp.dk,2016-11-02.[4] WAsP help document[EB/OL]. www.wasp.dk,2016-11-02.
[5] Wieringa J. Does representative wind information exist?[J]. Wind Engineering,1996,65:1—12.
[6]王丰,刘德有,曾利华,等.大型风电场风机最优布置规律研究[J].河海大学学报:自然科学版,2010,38(4):472—478.[6] Wang Feng, Liu Deyou, Zeng Lihua, et al.Characteristics of optimal placement of wind turbines in large scale wind farms[J]. Journal of Hohai University(Natural Sciences),2010,38(4):472—478.
[7]李军,胡非,刘磊,等.风能资源评估中地表粗糙度的研究[J].能源科学,2011,33(12):2341—2348.[7] Li Jun,Hu Fei,Liu Lei,et al. On estimation of surface roughness for wind energy resources assessment[J].Resources Science,2011,33(12):2341—2348.
[8]宫靖远,贺德馨,孙如林,等.风电场工程技术手册[M].北京:机械工业出版社,2004,36—37.[8] Gong Jingyuan, He Dexin, Sun Rulin, et al.Engineering technical manual for wind farm[M].Beijing:Machinery Industry Press,2004,36—37.