摘要
为提高风电场实际运行模型的精确性,采用了基于实测风功率曲线的风电场等值建模方法.该方法运用统计学理论分析了风电场的实测风速及有功功率,得到风电机组的实测风速-功率特性曲线,并利用该曲线得到能够反映风电机组实际输出特性的风力机参数,从而建立了风电机组模型.以实际测得的风速作为分群指标,利用改进型最大树法对风电机组进行分群,进而建立了风电场的等值模型,并与基于风速分群的传统等值方法及风电场实际输出功率曲线进行了对比.仿真结果表明,应用该方法对风电场进行等值建模是有效的,且该模型具有较高的精度.
In order to improve the accuracy of the actual operation model of wind farms,a wind farm equivalent modeling method based on the measured wind power curve was adopted.By using the statistical theory to analyze the measured wind speed and active power of the wind farm,the measured wind speed power characteristic curve of the wind turbine was obtained.Then the curve was used to get the wind turbine parameters which can reflect the actual output characteristics of the wind turbine,and the model of the wind turbine was established.Using the actual measured wind speed as the grouping index,the wind power unit was grouped by the improved maximum tree method,the equivalent model of the wind farm was established,and comparison was made with the traditional equivalent method based on the wind speed and the actual output power curve of the wind farm.The simulation results show that the proposed method is effective for the equivalent modeling of wind farms,and the model has high accuracy.
作者
白一秀
董海鹰
李晓青
BAI Yi-xiu;DONG Hai-ying;LI Xiao-qing(School of Automation and Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《兰州交通大学学报》
CAS
2018年第2期58-64,83,共8页
Journal of Lanzhou Jiaotong University
关键词
风电场
运行数据
风速功率曲线
等值
建模
wind farm
operating data
wind speed power curve
equivalent
modeling
