2005
DOI: 10.1109/tec.2004.842391
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Influence of Generator Load Conditions on Third-Harmonic Voltages in Generator Stator Winding

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Cited by 19 publications
(2 citation statements)
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“…An algorithm has been proposed which uses correlation techniques with the real and imaginary parts of the electric current phasor in the neutral point side of the line [9] to detect unbalanced faults in the generator by monitoring the second harmonic components of a reverse phase power and the field currents of the generator terminals [10]. Protection technique based on delta-zero sequence voltage [11] and the third harmonic voltage have been presented [12] and recently, other fault detection techniques using artificial neural networks (ANN) [13] and fuzzy controlled neural network (FCNN) [14] have been proposed. In the early stages, the research has mostly focused on reducing the problems of transforming the analog technologies into digital ones, and to decrease the processing times.…”
mentioning
confidence: 99%
“…An algorithm has been proposed which uses correlation techniques with the real and imaginary parts of the electric current phasor in the neutral point side of the line [9] to detect unbalanced faults in the generator by monitoring the second harmonic components of a reverse phase power and the field currents of the generator terminals [10]. Protection technique based on delta-zero sequence voltage [11] and the third harmonic voltage have been presented [12] and recently, other fault detection techniques using artificial neural networks (ANN) [13] and fuzzy controlled neural network (FCNN) [14] have been proposed. In the early stages, the research has mostly focused on reducing the problems of transforming the analog technologies into digital ones, and to decrease the processing times.…”
mentioning
confidence: 99%
“…A potência reativa também afeta o terceiro harmônico e é ainda mais imprevisível. Em alguns casos ela aumenta com aumento da carga reativa, em outros há uma queda abrupta em um valor específico de potência reativa, tornando os esquemas citados anteriormente imprecisos (FULCZYK; MYDLIKOWSKI, 2005). Assim, fica evidente a dificuldade de ajustar a sensibilidade da proteção contra faltas fase-terra baseadas na medição de terceiro harmônico.…”
Section: Proteção Contra Faltas Fase-terraunclassified