tailieunhanh - Báo cáo hóa học: "Research Article Modeling of Electric Disturbance Signals Using Damped Sinusoids via Atomic Decompositions and Its Applications"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Modeling of Electric Disturbance Signals Using Damped Sinusoids via Atomic Decompositions and Its Applications | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2007 Article ID 29507 15 pages doi 2007 29507 Research Article Modeling of Electric Disturbance Signals Using Damped Sinusoids via Atomic Decompositions and Its Applications Lisandro Lovisolo 1 Michel P. Tcheou 2 3 Eduardo A. B. da Silva 2 Marco A. M. Rodrigues 3 and Paulo S. R. Diniz2 1 Departamento de Eletronica e Telecomunicaẹões DETEL Faculdade de Engenharia FEN Universidade do Estado do Rio de Janeiro UERJ Rio de Janeiro 20550-900 RJ Brazil 2 Laboratory of Signal Processing PEE COPPE and DEL Poli Federal University of Rio de Janeiro CP 68504 Rio de Janeiro 21941-972 RJ Brazil 3 Electric Power Research Center CEPEL CP 68007 Rio de Janeiro 21941-590 RJ Brazil Received 10 August 2006 Accepted 17 December 2006 Recommended by Alexander Mamishev The number of waveforms monitored in power systems is increasing rapidly. This creates a demand for computational tools that aid in the analysis of the phenomena and also that allow efficient transmission and storage of the information acquired. In this context signal processing techniques play a fundamental role. This work is a tutorial reviewing the principles and applications of atomic signal modeling of electric disturbance signals. The disturbance signal is modeled using a linear combination of damped sinusoidal components which are closely related to the phenomena typically observed in power systems. The signal model obtained is then employed for disturbance signal denoising filtering of DC components and compression. Copyright 2007 Lisandro Lovisolo et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Electric disturbance signals are acquired by digitizing the voltage and or current waveforms with digital fault recorders DFRs at several points of

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