High-precision synchronous phasor measurement based on compressed sensing

被引：0
|
作者：
Yu H.-N. [1 ,2 ]
Du Y. [1 ]
Guo S.-X. [2 ]
机构：
[1] College of Information Engineering, Northeast Dianli University, Jilin
[2] College of Electronic Science and Engineering, Jilin University, Changchun
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2018年 / 48卷 / 01期
关键词：
Compressive sensing; Discrete Fourier transform; Information processing technology; Phasor measurement; Reconstruction algorithm;
D O I：
10.13229/j.cnki.jdxbgxb20161043
中图分类号：
学科分类号：
摘要：
GPS timing synchronization phasor measurement provides important basis for online analysis of wide-area power signal. Currently discrete Fourier transform method is widely used in synchronization phasor measurement. To eliminate or weaken the measurement error caused by the imprecise synchronous sampling, a high precision synchronous phasor measurement algorithm is proposed. It is based on Compressed Sensing (CS) theory, which modifies discrete Fourier transform to estimate the results. The reconstruction algorithm uses the discrete Fourier transform to rarefy the measuring signal, and takes the Dirichlet matrix as the observation matrix. It also refacors measurement signal with CS refactor algorithm. The simulation results show that, compared with the traditional discrete Fourier transform method, without extending the measurement time, the proposed algorithm can effectively eliminate or weaken the spectrum leakage error and greatly improve the phasor measurement precision of signal. © 2018, Editorial Board of Jilin University. All right reserved.
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页码：312 / 318
页数：6
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