基于分段支持向量机的风电机组理论功率计算研究
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摘要
结合风电机组功率曲线特性与支持向量机学习方法,建立基于分段支持向量机的风电机组理论功率计算模型。研究结果表明,该模型计算精度无论是在单机理论功率计算还是全场理论功率计算方面都要高于目前已有方法。在得到高精度理论功率的基础上,提出一个新的机组性能评价指标——出力可提高系数,该指标能够科学地反映机组设备的运行状态与质量,可为实现风场精细化管理提供依据。
Based on the characteristics of the power curves of wind turbine generator systems and the principles of the support vector machine(SVM),a piecewise support vector machine(PSVM)model is proposed in this article to improve the precision of theoretical wind-power calculation. The results showed that the calculation accuracy of this model is higher than other existing methods on both single wind turbine and the whole wind farm. Based on the precise calculated theoretical power,an original index to evaluate the performance of the wind turbine was put forward-Output Improvement Coefficient,which can reflect the status and the quality of the wind turbines scientifically,providing the basis for the intensive management of the wind farms.
Based on the characteristics of the power curves of wind turbine generator systems and the principles of the support vector machine(SVM),a piecewise support vector machine(PSVM)model is proposed in this article to improve the precision of theoretical wind-power calculation. The results showed that the calculation accuracy of this model is higher than other existing methods on both single wind turbine and the whole wind farm. Based on the precise calculated theoretical power,an original index to evaluate the performance of the wind turbine was put forward-Output Improvement Coefficient,which can reflect the status and the quality of the wind turbines scientifically,providing the basis for the intensive management of the wind farms.
引文
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[2]国家电力监管委员会办公厅.风电场弃风电量计算办法(试行)[Z].2012-12-19.
[3]Wang N B,Ma M,Lv Q Q,et al.Method for calculating theoretical power of a wind farm based on extrapolation of anemometer tower data[P].US:20160025070,2016.
[4]IEC 61400-12-2.Wind turbines part 12-2,power performance of electricity producing wind turbines based on nacelle anemometry[S].
[5]宋颖巍,万杰,刘岩.基于修正风速的风电并网运行弃风电量评估[J].电气应用,2014,23(33):42-45.[5]Song Yingwei,Wan Jie,Liu Yan,et al.Wind power integration curtailment electricity assessment based on improved wind speed[J].Electrotechnical Application,2014,33(23):42-45.
[6]邢作霞,张鹏飞,李媛.基于CFD技术的风电机组功率特性评估方法[J].太阳能学报,2015,36(12):2882-2887.[6]Xing Zuoxia,Zhang Pengfei,Li Yuan.Evaluation method of power characteristics of wind turbine based on cfd technology[J].Acta Energiae Solaris Sinica,2015,36(12):2882-2887.
[7]Smith B,Link H,Randall G,et al.Applicability of nacelle anemometer measurements for use in turbine power performance tests[A].American Wind Energy Association(AWEA)WINDPOWER 2002 Conference[C],Oregon,USA:2002.
[8]姜文玲,冯双磊,孙勇,等.基于机舱风速数据的风电场弃风电量计算方法研究[J].电网技术,2014,38(3):647-652[8]Jiang Wenling,Feng Shuanglei,Sun Yong,et al.Study on energy loss calculation during wind power curtailment based on wind speed measured by turbine nacelle anemometers[J].Power System Technology,2014,38(3):647-652
[9]Cortes C,Vapnic V.Support vector network[J].Machine Learning,1995,20(3):273-297.
[10]Cao Lijuan.Support vector machines experts for time series forecasting[J].Neurocomputing,2003,51(2):321-339.
[11]Diznabi B.Investigation of the flow relation to nacelle anemometry[D].Denmark:Technical University of Denmark,2009.
[12]李杰,赵萍,戚中浩,等.风力机叶片旋转对测风仪的影响[J].东方汽轮机,2012,(1):20-25.[12]Li Jie,Zhao Ping,Qi Zhonghao,et al.The effect of rotating wind turbine blade to anemometer[J].Dongfang Turbine,2012,(1):20-25.
[13]中国电力企业联合会.关于印发《全国风电场生产运行指标对标评比管理办法》的通知[Z].2014-12-12.
[14]杨勇平,刘彤,郭民臣,等.关于火电机组性能评价指标的探讨[J].中国电机工程学报,2000,20(2):56-60.[14]Yang Yongping,Liu Tong,Guo Mingchen,et al.Astudy on the performance evaluation index for a coalfired power generation unit[J].Proceedings of the CSEE,2000,20(2):56-60.