Artículos de revistas
Enhanced Analysis Of Oscillatory Undamped Overvoltages In Transformer Energization
Registro en:
1873-2046
Electric Power Systems Research. ELSEVIER SCIENCE SA, n. 138, p. 72 - 77.
0378-7796
WOS:000379374300011
10.1016/j.epsr.2016.03.034
Autor
de Mattos
LMN; Mendes
AMP; Tavares
MC; de Lima
JF
Institución
Resumen
This paper proposes an enhancement on the methodology commonly used for overvoltage analysis motivated by the excitation of electric network resonance points due to injection of harmonic currents by equipment with nonlinear characteristics. The improvement proposed comprehends inclusion of effects caused by nonlinear equipment into the frequency scan study, harmonic content survey, transformation of currents and/or voltages from phase to sequence domain, and application of the Windowed Fast Fourier Transform (FFT). This enhanced methodology was applied in the investigation and identification of unexpected resonant behavior causes observed in pre-operational electromagnetic transient studies for an autotransformer energization. (C) 2016 Elsevier B.V. All rights reserved. 138
72 77