Impedance Modeling and Stability Analysis of Power System with Variable-speed Pumped Storage and Direct-drive Wind Turbines

Fangzhou WANG; Kaipei LIU; Liang QIN; Man CHEN; Shu ZHU; Yixing DU

doi:10.7500/AEPS20201109003

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Impedance Modeling and Stability Analysis of Power System with Variable-speed Pumped Storage and Direct-drive Wind Turbines

Basic Research | 更新时间：2025-06-16

- Impedance Modeling and Stability Analysis of Power System with Variable-speed Pumped Storage and Direct-drive Wind Turbines
- Automation of Electric Power Systems Vol. 45, Issue 17, Pages: 61-69(2021)
- 作者机构：
  
  1.武汉大学电气与自动化学院，湖北省武汉市 430070
  2.中国南方电网调峰调频发电有限公司，广东省广州市 510630
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China(2017YFB0903700;2017YFB0903705)
- DOI：10.7500/AEPS20201109003
  CLC：
- Received：09 November 2020，
  
  Revised：2021-03-26，
  
  Published Online：08 June 2021，
  
  Published：10 September 2021
- 稿件说明：
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王方洲,刘开培,秦亮等.变速抽水蓄能和直驱风电系统的阻抗建模及稳定性分析[J].电力系统自动化,2021,45(17):61-69.

WANG Fangzhou,LIU Kaipei,QIN Liang,et al.Impedance Modeling and Stability Analysis of Power System with Variable-speed Pumped Storage and Direct-drive Wind Turbines[J].Automation of Electric Power Systems,2021,45(17):61-69.
王方洲,刘开培,秦亮等.变速抽水蓄能和直驱风电系统的阻抗建模及稳定性分析[J].电力系统自动化,2021,45(17):61-69. DOI： 10.7500/AEPS20201109003.

WANG Fangzhou,LIU Kaipei,QIN Liang,et al.Impedance Modeling and Stability Analysis of Power System with Variable-speed Pumped Storage and Direct-drive Wind Turbines[J].Automation of Electric Power Systems,2021,45(17):61-69. DOI： 10.7500/AEPS20201109003.

摘要

变速抽水蓄能和直驱风电联合运行系统中存在多种电力电子装置，且运行工况复杂，亟须对该类系统的稳定性进行深入研究。在构造双馈感应电动机小信号模型时，把双馈感应电动机转速作为变量，并引入水泵水轮机小信号模型，建立了

d-q-

0坐标系下联合运行系统的宽频段阻抗模型；同时对不同工况、不同参数下的系统稳定性进行了相应的分析。分析结果表明：系统在快速转速控制方式下稳定性受电气侧参数影响更大；对于变速抽水蓄能机组与直驱风电机组，前者锁相环阻尼比的减小会增大后者锁相环阻尼比的稳定域，二者控制器积分参数间也存在一定程度的耦合。最后，通过仿真验证了理论分析的正确性。

Abstract

There are a variety of power electronic devices in the combined operation system with variable-speed pumped storage units and direct-drive wind turbines

and the operation conditions are complex. It is urgent to conduct in-depth research on the stability of this type of system. When the small signal model of the doubly-fed induction machine (DFIM) is constructed

the rotational speed of the DFIM is used as a variable

and a small signal model of the pump-turbine is introduced to establish the broadband impedance model of the combined operation system in the

d-q-

0 coordinates. The system stability under different operation conditions and different parameters is analyzed accordingly. The analysis results show that the stability of the system with fast speed control mode is more affected by the electrical-side parameters. For the variable-speed pumped storage units and direct-drive wind turbines

the decrease of the damping ratio of the phase-locked loop of the former will increase the stability domain of damping the ratio of the latter. There is also a certain degree of coupling between the integral parameters of the two controllers. Finally

the correctness of the theoretical analysis is verified by simulation.

关键词

Keywords

references

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