基于实测数据的风电场风速-功率特性仿射建模方法
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摘要
提出基于实测数据的风电场风速-功率曲线仿射建模方法。以预报误差、地形差异以及尾流效应影响因素作为噪声元,建立输入风速的仿射模型;将风电场功率实测数据划分为多个所属风速区间,求取各个风速区间的中心值,拟合仿射中心值曲线,进而辨识风速-功率仿射模型中的噪声元系数。实测数据验证了所提方法的有效性。
An affine modelling method of wind speed-power curve in wind farm is proposed based on measured data. An affine model of input wind speed is built taking the influence factors of forecast error,topographic difference and wake effect as noise elements. The measured wind power data is divided into multiple wind speed intervals,the center values of each interval are obtained and the affine center value curves are fitted,thus the noise element coefficients in the wind speed-power affine model are identified. The validity of the proposed method is verified by the measured data.
An affine modelling method of wind speed-power curve in wind farm is proposed based on measured data. An affine model of input wind speed is built taking the influence factors of forecast error,topographic difference and wake effect as noise elements. The measured wind power data is divided into multiple wind speed intervals,the center values of each interval are obtained and the affine center value curves are fitted,thus the noise element coefficients in the wind speed-power affine model are identified. The validity of the proposed method is verified by the measured data.
引文
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[2] 王勃,冯双磊,刘纯.考虑预报风速与功率曲线因素的风电功率预测不确定性估计[J].电网技术,2014,38(2):463-468.WANG Bo,FENG Shuanglei,LIU Chun.Uncertainty evaluation of wind power prediction considering impacts of power curve and predicted wind speed[J].Power System Technology,2014,38(2):463-468.
[3] 杨茂,杨琼琼.风电机组风速功率特性曲线建模研究综述[J].电力自动化设备,2018,38(2):34-43.YANG Mao,YANG Qiongqiong.Review of modeling of wind speed-power characteristic curve for wind turbine[J].Electric Power Automation Equipment,2018,38(2):34-43.
[4] WU B,SONG M,CHEN K,et al.Wind power prediction system for wind farm based on auto regressive statistical model and physical model[J].Journal of Renewable & Sustainable Energy,2014,6(1):3192-3198.
[5] SHOKRZADEH S,JOZANI M J,BIBEAU E.Wind turbine power curve modeling using advanced parametric and non-parametric methods[J].IEEE Transactions on Sustainable Energy,2014,5(4):1262-1269.
[6] 王钤,潘险险,陈迎,等.基于实测数据的风电场风速-功率模型的研究[J].电力系统保护与控制,2014,42(2):23-27.WANG Qian,PAN Xianxian,CHEN Ying,et al.Study of wind speed-active power model for wind farm based on measured data[J].Power System Protection and Control,2014,42(2):23-27.
[7] 崔嘉,杨俊友,邢作霞,等.基于单机最优功率曲线拟合的多场景风电功率预测方法[J].电力系统自动化,2015,39(16):23-28,42.CUI Jia,YANG Junyou,XING Zuoxia,et al.Multi-scenario wind power forecasting method based on single turbine optimal power curve fitting[J].Automation of Electric Power Systems,2015,39(16):23-28,42.
[8] 林鹏,赵书强,谢宇琪,等.基于实测数据的风电功率曲线建模及不确定估计[J].电力自动化设备,2015,35(4):90-95.LIN Peng,ZHAO Shuqiang,XIE Yuqi,et al.Wind power curve mode-ling based on measured data and uncertainty estimation[J].Elec-tric Power Automation Equipment,2015,35(4):90-95.
[9] 王守相,韩亮.DG出力不确定性对配电网影响力分析的复仿射数学方法[J].中国电机工程学报,2014,34(31):5507-5515.WANG Shouxiang,HAN Liang.Complex affine arithmetic based me-thod for the analyses of DG’s uncertainty influence on distribution network[J].Proceedings of the CSEE,2014,34(31):5507-5515.
[10] 王树洪,邵振国.考虑DG运行不确定性的复仿射Ybus高斯迭代区间潮流算法[J].电力自动化设备,2017,37(3):38-44.WANG Shuhong,SHAO Zhenguo.Interval power-flow algorithm based on complex affine Ybus-Gaussian iteration considering uncertainty of DG operation[J].Electric Power Automation Equipment,2017,37(3):38-44.
[11] 邵振国,王树洪.一种采用复仿射区间潮流的有源配电网多目标无功优化方法[J].中国电机工程学报,2017,37(17):4956-4965.SHAO Zhenguo,WANG Shuhong.Multi-objective reactive power optimization method of distribution network with DGs base on complex affine power flow algorithm[J].Proceedings of the CSEE,2017,37(17):4956-4965.
[12] 刘璇,贾彦,任哲,等.基于风特性和小型风力机的组合风速模型建立[J].工程热物理学报,2014,35(11):2178-2181.LIU Xuan,JIA Yan,REN Zhe,et al.Models of combined wind speed based on wind characteristics and small wind turbine[J].Journal of Engineering Thermophysics,2014,35(11):2178-2181.
[13] COMBA J,STOLFI J.Affine arithmetic and its applications to computer graphics[M].Rio de Janeiro,Brazi:Brazilian Symposium on Computer Graphics and Image,1993:9-18.
[14] 寿华好,王国瑾,沈杰.区间算术和仿射算术的研究与应用[J].中国图象图形学报,2006,11(10):1351-1358.SHOU Huahao,WANG Guojin,SHEN Jie.A survey on research and applications of interval arithmetic and affine arithmetic[J].Journal of Image and Graphics,2006,11(10):1351-1358.
[15] 曹娜,于群,王伟胜,等.风电场尾流效应模型研究[J].太阳能学报,2016,37(1):222-229.CAO Na,YU Qun,WANG Weisheng,et al.Research on wake effect model of wind farm[J].Acta Energiae Solaris Sinica,2016,37(1):222-229.