An improved method for signal processing and compression in power quality evaluation

Autor(es)

Romano, João Marcos Travassos ; Duque, Carlos A. ; Ribeiro, Moises Vidal ^[3]

• Tipo de documento: Artigo Científico
• Fonte: IEEE Transactions on Power Delivery; v. 19, n. 2, p. 464-471, Apr. 2004.
• Área do conhecimento: Engenharias - Engenharia Elétrica
• Assunto(s): Magnetismo Equalização

Resumo

This paper introduces a new waveform coding technique, based on wavelet transform, for power quality monitoring purposes. The proposed enhanced data compression method (EDCM) presents a complete adaptive signal processing approach to estimate the fundamental sinusoidal component and separate it from the transient ones in the monitored signal. When these nonstationary components are submitted to the compression technique, the sparse representation property of the wavelet transform provides an improvement in the compression ratio. Also, the degradation inserted by the lossy compression process is minimized. Simulation results confirm the effectiveness of the proposed method when compared to the standard solution, characterized by the compression of the whole monitored signal. (AU)

• Processo FAPESP: 01/08513-0 - Transmissao e equalizacao por sub-bandas e concelamento de ruidos impulsivos para uso eficiente dos canais plc (powerline communication).
• Beneficiário: Moises Vidal Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Doutorado