基于自回归法的风电场脉动风速模拟
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摘要
脉动风速模型主要反映脉动风速的位置分布和时间变化特性,其对整个风力发电机组与电网的运行状态有重要影响,是风力发电仿真研究的基础。文中根据风力发电机的结构特点与脉动风的特性,利用自回归法建立了具有一定功率谱密度特性的脉动风速模型,利用Matlab进行了仿真模拟。仿真结果表明:在工程精度范围内,文中风速模型较好地反映了脉动风的特性,满足了工程应用要求。
Turbulent wind model mainly reflects the distribution and variation characteristic of turbulent wind speed,so it greatly impacts the operation of both wind power generation units and power network and is the foundation for simulative research of wind power generation.According to the structural features and the characteristic of turbulent wind,by use of autoregression a turbulent wind speed model with a certain power spectral density is built and simulated by Matlab software.Simulation results show that within the engineering precision range the proposed wind speed model can reflect the characteristic of turbulent wind.
Turbulent wind model mainly reflects the distribution and variation characteristic of turbulent wind speed,so it greatly impacts the operation of both wind power generation units and power network and is the foundation for simulative research of wind power generation.According to the structural features and the characteristic of turbulent wind,by use of autoregression a turbulent wind speed model with a certain power spectral density is built and simulated by Matlab software.Simulation results show that within the engineering precision range the proposed wind speed model can reflect the characteristic of turbulent wind.
引文
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[3]Potter C W,Negnevitsky M.Very short-term wind forecasting for tasmanian power generation[J].IEEE Trans on Power Systems,2006,21(2):965-972.
[4]曾宪武,韩大建.大跨度桥梁风场模拟方法对比研究[J].地震工程与工程振动,2004,24(1):135-140.Zeng Xianwu,Han Dajian.A comparative study on simulation methods for wind field of long-span bridges[J].Earthquake Engineering and Engineering Vibration,2004,24(1):135-140(in Chinese).
[5]李春祥,都敏,韩兵康.基于模型模拟超高层建筑的脉动风速时程[J].地震工程与工程振动,2008,28(3):87-94.Li Chunxiang,Du Min,Han Bingkang.Simulation of fluctuating wind speed time series of super tall buildings based on AR model[J].Earthquake Engineering and Engineering Vibration,2008,28(3):87-94(in Chinese).
[6]袁波,应惠清,徐佳炜.基于线性滤波法的脉动风速模拟及其Matlab程序的实现[J].结构工程师,2007,23(4):55-61.Yuan Bo,Ying Huiqing,Xu Jiawei.Simulation of turbulent wind velocity based on linear filter method and Matlab program realization[J].Structural Engineering,2007,23(4):55-61(in Chinese).
[7]杜颖,卢继平,李青.基于最小二乘支持向量机的风电场短期风速预测[J].电网技术,2008,32(15):62-66.Du Ying,Lu Jiping,Li Qing.Short-term wind speed forecasting of wind farm based on least square-support vector machine[J].Power System Technology,2008,32(15):62-66(in Chinese).
[8]蔡凯,谭伦农,李春林.时间序列与神经网络法相结合的短期风速预测[J].电网技术,2008,32(8):82-85.Cai Kai,Tan Lunnong,Li Chunlin.Short-term wind speed forecasting combing time series and neural network method[J].Power System Technology,2008,32(8):82-85(in Chinese).
[9]李东东,陈陈.风力发电系统动态仿真的风速模型[J].中国电机工程学报,2005,25(21):41-44.Li Dongdong,Chen Chen.Wind speed model for dynamic simulation of wind power generation[J].Proceedings of the CSEE,2005,25(21):41-44(in Chinese).
[10]穆安乐,刘宏昭.风力发电机三维阵风谱建模与仿真的向量自回归法[J].中国电机工程学报,2008,28(8):117-120.Mu Anle,Liu Hongzhao.VAR approach for3-d gust wind spectral modeling and simulation of wind turbine[J].Proceedings of the CSEE,2008,28(8):117-120(in Chinese).
[11]Iannuzzi A,Spinelli P.Artificial wind generation and structural response[J].Journal of Structural Engineering ASCE,1987,113(10):2382-2398.
[12]埃米尔.希缪,罗伯特.H.斯坎伦.刘尚培,项海帆,谢霁明译.风对结构的作用—风工程导论[M].上海:同济大学出版社,1992:22-31.
[13]陈严,张锦源,王楠,等.风力机风场模型的研究及紊流风场的Matlab数值模拟[J].太阳能学报,2006,27(9):955-960.Chen Yan,Zhang Jinyuan,Wang Nan,et al.Wind turbine wind field models study and numerical simulation of turbulence wind field with Matlab[J].Acta Energiae Solaris Sinica,2006,27(9):955-960(in Chinese).
[14]谷兴凯,范高锋,王晓蓉,等.风电功率预测技术综述[J].电网技术,2007,31(S2):335-338.Gu Xingkai,Fan Gaofeng,Wang Xiaorong,et al.Summarization of wind power prediction technology[J].Power System Technology,2007,31(S2):335-338(in Chinese).
[15]娄素华,李志恒,高苏杰,等.风电场模型及其对电力系统的影响[J].电网技术,2007,31(S2):330-334.Lou Suhua,Li Zhiheng,Gao Sujie,et al.Wind farms models and its impacts on wind farms integration into power system[J].Power System Technology,2007,31(S2):330-334(in Chinese).
[16]Mann J.Wind field simulation[J].Probabilistic Engineering Mechanics,1998,13(4):269-282.
[17]Poul S,Anca D.Wind models for simulation of power fluctuations from wind farms[J].Journal of Wind Engineering and Industrial Aerodynamics,2002,90(11):1381-1402.
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