Small signal stability analysis of synchronized control-based microgrid under multiple operating conditions

被引：0
|
作者：
Lu Z.-H. [1 ]
Lan Z. [2 ]
Wu J.-Y. [3 ]
Wang Z. [1 ]
Xin H.-H. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
[2] Economic Research Institute of State Grid Zhejiang Electric Power Company, Hangzhou
[3] Hangzhou Power Supply Company of State Grid Zhejiang Electric Power Company, Hangzhou
来源：
Wang, Zhen (eezwang@ieee.org) | 1600年 / Zhejiang University卷 / 50期
关键词：
Double fed induction generator (DFIG); Eigenvalues analysis; Microgrid; Small signal stability; Synchronized control;
D O I：
10.3785/j.issn.1008-973X.2016.03.018
中图分类号：
学科分类号：
摘要：
A synchronized control strategy of double fed induction generator (DFIG) in microgrid was presented to overcome the potential severe problems caused by the integration of large-scale wind turbine generators into microgrid, such as frequency instability and power imbalance. With synchronized control strategy, DFIG had the ability to provide power reserve, frequency regulation and effective support to the microgrid. Further, the small-signal stability (SSS) analysis of a typical microgrid system including DFIG and energy storage system (ESS) under the synchronized control was performed. The calculated dominant eigenvalues under multiple operating conditions indicate that the dominant modes are related to the DFIG shaft and the inner/outer control loop parameters of DFIG or ESS. Finally, the impacts of two types of key control parameters on the dominant eigenvalues were investigated, including the de-loading parameters and the active-power droop control parameters. Further simulation under wind speed variation and load disturbance indicates that the DFIG's de-loading operation can improve the system SSS performance. In addition, the coordination design of active-power droop parameters in DFIG and ESS can also improve the damping of the dominant eigenvalues. © 2016, Zhejiang University Press. All right reserved.
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页码：536 / 544and550
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