双馈风电机组静止坐标系下阻抗建模及次同步谐振抑制策略

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双馈风电机组静止坐标系下阻抗建模及次同步谐振抑制策略

更新时间：2025-08-13

- 双馈风电机组静止坐标系下阻抗建模及次同步谐振抑制策略
- Automation of Electric Power Systems Vol. 43, Issue 6, Pages: 41-48(2019)
- 作者机构：
  
  哈尔滨工业大学电气工程与自动化学院,黑龙江省,哈尔滨市,150001
- 作者简介：
- 基金信息：
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- Published：2019
- 稿件说明：
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ZHANG Xueguang. [J]. Automation of electric power systems, 2019, 43(6): 41-48.
DOI：

ZHANG Xueguang. [J]. Automation of electric power systems, 2019, 43(6): 41-48. DOI：

摘要

为清楚分析双馈风力串补系统次同步谐振发生机理，建立了双馈风电机组静止坐标系下的阻抗模型。首先，将双馈风电机组同步旋转坐标系下阻抗模型转换为复矢量形式，通过频率变换得到其在两相静止坐标系下的频域阻抗模型。基于阻抗模型所代表的物理意义，采用等效RLC串联电路，分析了控制器参数及电网参数对并网系统等效阻抗及谐振频率的影响。分别从增大次同步频段阻尼和降低系统发生次同步谐振频率的角度出发，在转子侧控制器中同时引入了附加阻尼和虚拟感抗控制，分析表明该方法能有效地抑制次同步谐振。最后，通过仿真验证了所建模型及理论分析的正确性。

Abstract

To explain the mechanism of sub-synchronous resonance(SSR)in doubly-fed induction generator(DFIG)based wind turbine system under series compensation

a static reference frame impedance model of DFIG based wind turbine is established. Firstly

the dq impedance model of DFIG based wind turbine is transformed into complex vector form and its frequency-domain impedance model is derived by frequency transformation. Based on the physical interpretation represented by the impedance model

the influence of controller and network parameters on equivalent impedance and SSR frequency of grid-connected system is analyzed using equivalent RLC series circuit. Damping control and virtual inductance control are proposed to mitigate SSR

which can increase the damping of SSR region and reduce the SSR frequency of the system

respectively. Finally

the accuracy of the model and theoretical analysis is verified by simulation.

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