ESTIMAÇÃO DE FASORES NA PRESENÇA DE HARMÔNICOS, DECAIMENTO CC EXPONENCIAL E INTER-HARMÔNICOS EXPONENCIALMENTE AMORTECIDOS

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

This thesis presents the proposition of two novel methods in the field of phasor estimation. The first proposes to estimate the phasor of the fundamental component in the presence of harmonics and exponential decaying DC. This methodology is based on the application of filters DFT (Discrete Fourier Transform) and some methods of signal processing such as windowing, modulation and DTFT (Discrete Time Fourier Transform). The second approach also proposes to estimate the phasor of the fundamental component, but in a more complex scenario formed for harmonics, exponential decaying DC and the sub-synchronous oscillations . This methodology is based on the application of artificial neural networks and some methods of signal processing. Both methods were evaluated against traditional methods of phasor estimation and the simulations showed that the two proposed methods were more accurate then others in presence of noise

ASSUNTO(S)

estimação fasorial engenharia eletrica decaimento cc exponencial oscilações subsíncronas processamento de sinais proteção de linhas de transmissão phasor estimation exponential decaying dc sub-synchronous oscillations signal processing protection of transmission lines

ACESSO AO ARTIGO

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