Sinusoidal representation of a transient signal based on the Hilbert transform

被引：0
|
作者：
Luo J. [1 ]
Shi J. [1 ]
机构：
[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2022年 / 50卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Attenuation characteristics; Fitting function; Hilbert transform; Power system; Transient analysis;
D O I：
10.19783/j.cnki.pspc.210309
中图分类号：
学科分类号：
摘要：
To analyze the characteristics of a power system transient signal and calculate its derivative, it is feasible to fit the function expression of the signal based on a sample, but the existing transient signal fitting methods still have shortcomings of certainty and derivability of the fitting function. Given this, a sinusoidal representation method for transient signal analysis of a power system based on a Hilbert transform is proposed. The sine function of the transient signal is used to form a fitting basis function, and the Hilbert transform is used to meet the certainty of the fitting function. Compared with the existing methods, this method can directly decompose the steady-state component and transient component of the fault transient signal, and its transient component can reflect the attenuation characteristics of the fault signal. This method can also fit the function expression of the transient signal, and then calculate the arbitrary order derivative value of the transient voltage and current signal. This is the basis of many signal processing calculations. Through the analysis of a set of given signals and a set of field recorded signals, the effectiveness of the proposed method is verified. © 2022 Power System Protection and Control Press.
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页码：1 / 7
页数：6
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