Electromechanical Time Scale Stability Analysis on DFIG Connected to Power Grid With Frequency Modulation Control

YANG Tianxin; HUANG Yunhui; CHEN Fuen; WANG Dong; ZHOU Keliang; XIAO Xiaying

doi:10.19725/j.cnki.1007-2322.2023.0328

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Electromechanical Time Scale Stability Analysis on DFIG Connected to Power Grid With Frequency Modulation Control

更新时间：2025-12-11

- Electromechanical Time Scale Stability Analysis on DFIG Connected to Power Grid With Frequency Modulation Control
- Issue 6, Pages: 1210-1219(2025)
- 作者机构：
  
  1. 武汉理工大学自动化学院,湖北省,武汉市,430070
  2. 武汉理工大学深圳研究院,广东省,深圳市,518000
  3. 深圳市禾望电气股份有限公司,广东省,深圳市,518000
  4. 湖北省电力规划设计研究院有限公司,湖北省,武汉市,430070
- 作者简介：
- 基金信息：
- DOI：10.19725/j.cnki.1007-2322.2023.0328
  CLC：
- Published：2025
- 稿件说明：
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YANG Tianxin, HUANG Yunhui, CHEN Fuen, et al. Electromechanical Time Scale Stability Analysis on DFIG Connected to Power Grid With Frequency Modulation Control[J]. 2025, (6): 1210-1219.
DOI：

YANG Tianxin, HUANG Yunhui, CHEN Fuen, et al. Electromechanical Time Scale Stability Analysis on DFIG Connected to Power Grid With Frequency Modulation Control[J]. 2025, (6): 1210-1219. DOI： 10.19725/j.cnki.1007-2322.2023.0328.

摘要

将快速调频控制纳入风机的控制系统有利于提升高比例新能源电力系统频率稳定性，然而，这将可能导致机电时间尺度小干扰不稳定。为研究含调频控制的双馈风机接入交流电网的机电时间尺度稳定性问题，首先结合动力学理论和内电势定义，建立了含快速调频控制的双馈风机机电时间尺度动态模型。然后，推导了双馈风机–同步机系统机电时间尺度小信号模型。在此基础上，采用模态分析和参与因子分析法，分别研究外部电网因素和内部控制因素的作用下，含调频控制的双馈风机接入交流电网的机电时间尺度主导模态的变化趋势，并揭示了其对并网系统机电稳定性影响规律。最后，通过双馈风机–同步机时域仿真验证了所建数学模型的准确性与所提方法的有效性。

Abstract

The integration of fast frequency modulation control into the control system of doubly fed induction generators (DFIG) is conducive to improving the frequency stability of high-proportion new energy power systems. The aforementioned condition

however

may lead to small-disturbance instability on the electromechanical time scale. To investigate the electromechanical time scale stability of DFIG connected to AC power grid with frequency modulation control

firstly

an electromechanical time scale dynamic model of DFIG with fast frequency modulation control is established by combining dynamic theory and internal potential definition. Then

an electromechanical time scale small signal model of DFIG and synchronous machine system is derived. The modal analysis and participation factor analysis are employed to investigate the changing trend of the dominant mode of the electromechanical time scale of the DFIG with frequency modulation control

which is connected to the AC grid. The research aims to study the influence of external grid factors and internal control factors

and reveals their influence on the electromechanical stability of the grid-connected system. The accuracy of the mathematical model and the effectiveness of the proposed method are ultimately verified through time domain simulation of the doubly-fed wind turbine-synchronous machine.

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Keywords

references

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