VMD based mode identification for broad-band oscillation in power system

被引：0
|
作者：
Tang J. [1 ]
Zhu J. [1 ]
Li Y. [2 ]
Zuo J. [3 ]
Ma J. [4 ]
Chen C. [4 ]
机构：
[1] State Grid Hunan Electrical Power Co., Ltd., Changsha
[2] College of Electrical Information Engineering, Hunan University, Changsha
[3] Electric Power Research Institute of State Grid Hunan Electric Power Co., Ltd., Changsha
[4] School of Information Science and Engineering, Central South University, Changsha
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2019年 / 47卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Broad-band oscillation; Low frequency oscillation; Mode identification; Power system; Sub-synchronous oscillation; Variational mode decomposition (VMD);
D O I：
10.7667/PSPC201861
中图分类号：
学科分类号：
摘要：
Oscillation is one of the most important stability problems of modern power system. In a power system, multiple types of oscillation crossing a broad-band may occur at a same time. In this paper, the mode identification for broad-band oscillation signal is proposed. First, the signal is decomposed to signals of different frequency bands by band pass filters. Then, the mode signals of the decomposed signals are extracted by using Variational Mode Decomposition (VMD) method. The mode parameters can be identified from the mode signals by Prony algorithm. The simulation and case study show that this method can distinguish and extract different kinds of oscillation modes of signals effectively and identify each mode's information accurately. It can accurately identify mode information from both oscillation signal and damped oscillation in ambient noise. © 2019, Power System Protection and Control Press. All right reserved.
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页码：1 / 8
页数：7
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