山东理工大学学报（自然科学版）

随着风电装机容量的持续增长，风电参与电力系统一次调频的必要性显著提升。然而，传统双馈感应发电机因采用最大功率点追踪控制策略，存在固有频率调节能力缺失问题，因此本文提出一种基于双馈风机旋转惯量的一次调频控制策略。该策略系统解析了双馈风机的有功功率控制机理及其在电网频率扰动下的动态响应特性；构建了具有虚拟惯量响应特性的组合调频策略，增强了双馈风机在系统频率变化时的暂稳态有功功率调节能力，实现对电网一次调频的有效支撑。为验证控制效果，在Matlab/Simulink环境下构建了含20%风电渗透率的3机9节点系统模型。仿真结果表明，所提出的虚拟惯量+下垂控制的组合调频策略可使双馈风机输出功率随电网频率动态响应，能够有效参与电网的一次调频。

With the continuous growth of wind power installations, the necessity for wind turbines to participate in Primary Frequency Regulation(PFR) of power systems has increased significantly. However, conventional Doubly Fed Induction Generators(DFIGs), operating under a Maximum Power Point Tracking(MPPT) strategy, inherently lack frequency regulation capability. To address this limitation, this paper proposes a primary frequency control strategy that exploits the rotational inertia of DFIGs. First, the active power control mechanism of DFIGs and their dynamic response characteristics under grid frequency disturbances are systematically analyzed. On this basis, a frequency regulation scheme with virtual inertia response capability is developed. By releasing or absorbing the kinetic energy stored in the rotor, the proposed strategy markedly enhances the transient and steady-state active power adjustment capability of DFIGs during system frequency variations, thereby providing effective active power support for PFR. To validate the proposed approach, a 3-machine 9-bus system model with 20% wind power penetration was established in Matlab/Simulink. Using this model, it is verified that the virtual inertia strategy can make the output power of DFIGs change with the frequency of the power grid, and can effectively participate in the primary frequency regulation of the power grid.