考虑源荷特性的双馈风电机组动态减载协同调频控制  

Dynamic load shedding cooperative frequency modulation control for doubly fed induction generator considering source load characteristics

作　　者：李季[1] 张升 LI Ji;ZHANG Sheng(Tianjin Key Laboratory for Control Theory&Application in Complicated Systems,Tianjin University of Technology,Tianjin 300384,China;School of Electrical Engineering and Automation,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学天津市复杂系统控制理论与应用重点实验室,天津300384 [2]天津理工大学电气工程与自动化学院,天津300384

出　　处：《天津理工大学学报》2024年第1期44-51,共8页Journal of Tianjin University of Technology

基　　金：天津市自然科学基金(17JCTPJC53100)。

摘　　要：为使双馈风电机组(doubly fed induction generator,DFIG)的有功输出能响应电网频率的变化,有效参与电网频率调节,提高风电系统的稳定性,文中分析了虚拟惯性控制、下垂控制以及减载控制的基本原理,探究了相关参数对风电并网系统频率特性的影响。在此基础上,提出一种考虑系统源荷特性的动态减载协同调频控制策略。该策略结合源荷扰动情况实现减载率修正,通过MATLAB/SIMULINK仿真验证表明:当负荷波动时,该控制策略相较于固定减载调频使含风电系统在不同风速下的频率稳定性有了显著提高。In order to make the active output of Doubly Fed Induction Generator(DFIG)responding changes to the grid frequency,participate effectively in the grid frequency adjustment,and improve the stability of wind power system,this paper analyzes the basic principle of the virtual inertia control,droop control and load shedding control,and explores the effect of related parameters on the frequency characteristics of the wind power grid connected system.On this bases,the control strategy of dynamic load shedding cooperative frequency modulation is proposed considering the system source load characteristics.The strategy combines source load perturbation is achieve load reduction rate correction.Through the MATLAB/SIMULINK simulation verification shows that when the load fluctuates,the control strategy improves significantly the frequency stability of the wind power system under different wind speeds compared to fixed load shedding frequency modulation.

关 键 词：双馈风电机组(DFIG) 频率响应 源荷特性 动态减载 

分 类 号：TM315[电气工程—电机]