Reduced-Order Modal Computation Method for Small-Signal Stability Examination of a Wind Farm

被引：0
|
作者：
Dong W. [1 ]
Du W. [2 ]
Wang H. [1 ,2 ]
机构：
[1] State Key Laboratory of Alternate Power Systems with New Energy Resources, North China Electric Power University, Beijing
[2] School of Electric Engineering, Sichuan University, Chengdu
来源：
Du, Wenjuan (ddwenjuan@qq.com) | 1600年 / China Machine Press卷 / 36期
关键词：
Equivalent subsystem; Linearized state-space model; Modal analysis; Small-signal stability examination; Wind farm;
D O I：
10.19595/j.cnki.1000-6753.tces.200158
中图分类号：
学科分类号：
摘要：
In the planning stage of a large-scale wind farm, if the small-signal stability of all the schemes is examined by using full-order model, the large workload and low working efficiency will affect the solving of the optimal scheme, thus in this paper, a reduced-order modal computation method was proposed. The full-order linearized state-space model was established at first. Secondly, it was considered that in the planning stage of a wind farm, typical model and parameters of the type of wind turbine generator (WTG) selected could be used and the dynamics of the WTGs were similar. Thus a wind farm comprised of N WTGs could be equivalently decoupled into N independent subsystems through equivalent transformation on the variables of the linearized model. Each subsystem was comprised of a single grid-connected WTG. According to the state-space model of the equivalent subsystems, a reduced-order modal computation (ROMC) method was proposed, which could be used to exam the small-signal stability of a wind farm in planning stage accurately with computational burden obviously reduced. Finally, the effectiveness of the method proposed was validated through study cases. © 2021, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1468 / 1479
页数：11
相关论文
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