中文摘要：

为了减小大规模风电并网对电力系统带来的不利影响,有必要对并网运行风电场的有功功率控制策略进行研究。文中设计了一种风电场有功功率控制策略,包含风电预测、发电计划制定、虚拟调节算法和风电机组控制4个部分。考虑到常规变桨控制方法中变桨机构的频繁动作将导致机械疲劳,提出了一种虚拟调节算法,在利用预测风速计算最佳变桨角度的基础上,采用分段桨距控制方法,提高变桨机构的效率。仿真研究证明了虚拟调节算法在实现风电场有功功率控制方面的可行性和有效性,具有一定的实用价值。

英文摘要：

It is necessary to investigate active power control strategy to mitigate the negative effect of large-scale integration of wind farms.This paper proposes an active power control strategy for wind farm including wind power forecasting,generation scheduling,virtual regulation algorithm and wind turbine control.A virtual regulation algorithm is developed to deal with mechanical fatigue caused by frequent actions of traditional pitch control.The efficiency of pitch-regulated mechanism is improved by use of piecewise pitch angle control method,based on the optimal pitch angle calculation with predicted wind speed.Simulation results verify the feasibility and effectiveness of virtual regulation algorithm in the wind farm active power control.