Dynamic Stability Analysis of DFIG-based Wind Power System During Asymmetric Faults of Weak Grid

被引：0
|
作者：
Yao, Jun [1 ]
Sun, Peng [1 ]
Liu, Ruikuo [2 ]
Fang, Xin [1 ]
Chi, Yongning [3 ]
Tian, Xinshou [3 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Shapingba District, Chongqing,400044, China
[2] Institute of Science and Technology, China Three Gorges Corporation, Haidian District, Beijing,100089, China
[3] State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems, China Electric Power Research Institute, Haidian District, Beijing,100192, China
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2021年 / 41卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Electric fault currents - Frequency domain analysis - Stability - Asynchronous generators - Electric power transmission networks;
D O I：
10.13334/j.0258-8013.pcsee.201447
中图分类号：
学科分类号：
摘要：
The dynamic coupling between the doubly fed induction generator (DFIG) and the power grid is strengthened during the severe asymmetric fault of weak grid, which makes the wind power system have the risk of oscillation instability. To explore the oscillation instability mechanism, the complex frequency domain impedance model considering the controller dynamic was derived. Based on the input-output characteristics of impedance model, the dynamic interaction between the positive and negative sequence impedances of the DFIG-based wind turbine and power grid was described. Moreover, the influence of different factors on the dynamic stability of system during weak grid asymmetric fault was investigated by the generalized Nyquist criterion. The suggestions of controller bandwidth selection during fault were proposed. Finally, the correctness of theoretical analysis was verified by the simulation and experiments. © 2021 Chin. Soc. for Elec. Eng.
引用
收藏
页码：7225 / 7236
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