风电场容量系数计算方法的研究

Study on the calculation method of capacity factor of the wind farm

容量系数反映风电场风速与风力发电机组的匹配程度,是风电场机组选型时衡量的一个重要指标。基于风电场风速的Weibull分布函数和风力发电机组输出特性的二次函数,建立计算容量系数CF数学模型,并且通过工程算例验证该计算方法是可行的。工程实例结果分析表明,风电场的容量系数和发电量近似呈线性关系,同时风电机组的塔架高度和额定风速的选择会影响风电场容量系数的大小。

Capacity factor,as an important index measured in the model selection of the wind generator,reflects the matching degree about wind speed and wind turbines in the wind farm.Based on the Weibull distribution function of wind speed and the quadratic function of output characteristics of wind turbine,a mathematical model is formulated to calculate the capacity factor,which is proved to be feasible through an engineering example.The result shows that the relationship between capacity factor and power generation of wind farm is approximately linear,and the selection of rated wind speed and tower height has an important impact on capacity factor of the wind farm.