计及尾流效应的风电场机网相互作用分析

由于大型风电场占地面积较大，风电机组数量众多，风电机组问尾流效应和风速时滞将对风电场产生一定的影响。采用Weibull分布函数，建立随机风速模型和风电机组模型，构建含风速场模型的风电场小干扰稳定模型。仿真分析复杂风速场下的风电场运行情况、对线型分布和交叉分布的三风机系统，得到了不同分布方式下系统的特征根变化轨迹，发现尾流效应和时滞效应对风电场机网小信号稳定的影响较小，通过合理的风机分布可以增加风电场的稳定裕度。

Interaction analysis of wind farm and grid taking account of wake effects

Because of the large scale wind farms occupied a larger area, and containing a large number of wind turbines, wake effects and wind delay among wind turbines have a certain impact on wind farms. Based on Weibull distribution function, bine mathematical model of wind farm were established wind model and wind tur The small signal stability model of wind farm was created, and the complex wind farms operation was comprehensively an alyzed. The linear distribution and cross distribution of three fan system were simulated, and the changing of eigen values under different distribution methods was analyzed. It was found out that wake effects and the time delay have little influence to small signal stability. The stability margin of wind farms via reasonable distribution of fans can thus be increased