双馈风电机组减载运行的协调控制研究

为了使收益和风能利用率最大化,双馈风电机组通常运行于最大功率点追踪模式下,但这样对并网系统来说风力发电机组此时无备用调节容量。在分析双馈风电机组有功功率控制方法的基础上,提出一种通过协调控制风力发电机转子转速和桨距角的策略,来实现双馈风电机组的减载运行,从而获得风力发电机组应有的可调容量。最后通过PSCAD软件建立仿真模型,验证该控制策略的正确性和可行性。

Research on Coordinated Control of Deloaded Operating by Doubly Fed Induction Generator Wind Turbines

In order to maximize the income and wind energy utilization, doubly fed induction generators (DFIGs) usually operate in maximum power point tracking, but in this scenario the wind turbines have no spare capacity for grid-connected system to adjust. Based on the analysis of the control methods of active power of DFIGS, this paper proposes a coordinated control strategy of increasing wind generator rotor speed and adjusting pitch angle to accomplish the deloaded operating of DFIGS and capture adjustable capacity. Detailed simulation study verifies the correctness and feasibility of the proposed control strategy by establishing the model in PSACD.