含双馈风电场的电力系统低频振荡模态与阻尼分析

王琪鑫; 唐飞; WANG Qixin; TANG Fei

doi:10.16513/j.cnki.10-1427/tk.2017.03.004

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分布式能源 ›› 2017, Vol. 2 ›› Issue (3) : 20-25. DOI: 10.16513/j.cnki.10-1427/tk.2017.03.004

学术研究

含双馈风电场的电力系统低频振荡模态与阻尼分析

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Low Frequency Oscillation Modes and Damping Analysis of Power System With Doubly Fed Wind Farm

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摘要

In view of the uncertainty problem of the low frequency oscillation caused by the doubly fed wind farm's accesss to power grid under high permeability, this paper presents a method of eigenvalue analysis under two working modes. Firstly, we analyze the mechanism of the traditional low frequency oscillation, and then establish the double fed induction generator (DFIG) model in the DigSilent simulation platform. Finally, we analyze the simulation and the characteristic values of the doubly fed wind farm's access to power grid under different permeability. The results show that the damping ratio increases with the increase of wind power penetration under the operation mode of constant power at high wind speed, and under the operation mode of constant speed at low wind speed, the damping ratio increases with the increase of wind power penetration at first, but later it decreases with the increase of wind power penetration. The simulation of IEEE 9-Machine 3-bus system verifies the validity and correctness of this method.

关键词

电力系统 / 双馈风电机组(DFIG) / 低频振荡 / 小干扰稳定 / 特征值 / 阻尼特性 / electric power system / doubly fed induction generator(DFIG) / low frequency oscillation / small-signal stability / eigenvalue / damping characteristic

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王琪鑫, 唐飞, WANG

Qixin

, 等. Low Frequency Oscillation Modes and Damping Analysis of Power System With Doubly Fed Wind Farm[J]. 分布式能源. 2017, 2(3): 20-25 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.03.004

[J]. Distributed Energy Resources. 2017, 2(3): 20-25 https://doi.org/10.16513/j.cnki.10-1427/tk.2017.03.004

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