A New Method With Hilbert Transform and Slip-SVD-Based Noise-Suppression Algorithm for Noisy Power Quality Monitoring

2019 ◽  
Vol 68 (4) ◽  
pp. 987-1001 ◽  
Author(s):  
Yan Wang ◽  
Qunzhan Li ◽  
Fulin Zhou ◽  
Yang Zhou ◽  
Xiuqing Mu
Keyword(s):  
Power Quality ◽  
Hilbert Transform ◽  
Noise Suppression ◽  
New Method ◽  
Quality Monitoring ◽  
Power Quality Monitoring

scholarly journals Uncertainty Principle and Power Quality Sensing and Analysis in Smart Substation

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4281
Author(s):  
Wanli Cai ◽  
Li Wu ◽  
Yibo Cui ◽  
Shunfan He
Keyword(s):  
Power Quality ◽  
Uncertainty Principle ◽  
Situation Awareness ◽  
New Method ◽  
Quality Monitoring ◽  
Accurate Analysis ◽  
Monitoring Method ◽  
Time Uncertainty ◽  
Power Quality Monitoring ◽  
Smart Substation

Different kinds of power quality can be sensed in a smart substation. Power quality sensing and analysis are basic functions of a smart substation for situation awareness. The uncertainty principle, which states that the time uncertainty and frequency uncertainty cannot be minimized simultaneously, is a bottleneck problem that undermines the faithfulness of sensing and confines the accuracy of analysis. This paper studies the influence of the uncertainty principle on the power quality monitoring issue in detail and solves the problem by ideal atomic decomposition (IAD). The new method employs a pair of time and frequency bases where the power quality waveform is sensed. Then, both time uncertainty and frequency uncertainty can be minimized simultaneously. The sensing process is realized by orthogonal matching pursuit (OMP). By simulated and field power quality tests with comparisons of developed methods, the new method can give faithful sensing and accurate analysis for various power qualities, and is validated as an effective power quality monitoring method in smart substations.

Continuous Power Quality Monitoring For Power Transmission Systems

2020 ◽  
Author(s):  
Carlos. A. Duque ◽  
Leandro Manso Rodrigues Silva ◽  
Guilherme Marcio Soares ◽  
Ildemar C. Deckman ◽  
Jose Luiz R. Pereira ◽  
...  
Keyword(s):  
Power Quality ◽  
Power Transmission ◽  
Quality Monitoring ◽  
Transmission Systems ◽  
Power Quality Monitoring ◽  
Power Transmission Systems ◽  
Continuous Power
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