Estimation Method of Power System Oscillation Signal under Power Swing with Using Complex Spectral Interpolation DFT

被引：0

作者：

Huang R. ^{[1
,2
,3
]}

Xiao Y. ^{[2
,3
]}

Liu M. ^{[2
,3
]}

Shan X. ^{[1
,3
]}

Wen H. ^{[1
,3
]}

机构：

[1] College of Electrical and Information Engineering, Hunan University, Changsha

[2] State Grid Hunan Electric Power Corporation Limited, Changsha

[3] Hunan Province Key Laboratory of Intelligent Electrical Measurement and Application Technology, Hunan University, Changsha

来源：

Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2021年 / 48卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Complex spectral interpolation; Fourier transform; Oscillation signal; Power swing; Three phase system;

D O I：

10.16339/j.cnki.hdxbzkb.2021.10.020

中图分类号：

学科分类号：

摘要：

Power swing is a balanced phenomenon in a three-phase power system, where accurate and fast parameter estimation of oscillation signal is important for the evaluation and elimination of power swing. This paper presents a method for parameter estimation of power system oscillation signal under power swing based on complex spectral interpolation DFT. The proposed method utilizes the symmetrical characteristics of a three-phase system. A complex exponential with the quadrature components is formed from three-phase real signals by using the Clarke transform. The DFT of the complex exponential is then performed. Moreover, various dynamic parameters are estimated by complex spectral interpolation using two DFT samples with the largest magnitude. The experimental simulation results show that the proposed method can accurately and effectively assess the dynamic parameters of power system under the power swing. © 2021, Editorial Department of Journal of Hunan University. All right reserved.

引用

页码：170 / 177

页数：7

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