RT info:eu-repo/semantics/article
T1 Analysis of the use of the Hanning Window for the measurement of interharmonic distortion caused by close tones in IEC standard framework
A1 Arranz Gimón, Ángel Eugenio
A1 Zorita Lamadrid, Ángel Luis
A1 Moríñigo Sotelo, Daniel
A1 Duque Pérez, Óscar
K1 Electric power
K1 Energía eléctrica
K1 Hann function
K1 Función Hann
K1 Adjustable speed drive
K1 Variadores de velocidad
K1 Induction motors
K1 Motores de inducción
K1 3306 Ingeniería y Tecnología Eléctricas
AB The widespread use of devices based on power electronics and other nonlinear loads has led to an increase in harmonic distortion that affects the quality of power systems. Therefore, the correct measurement of harmonic and interharmonic content is necessary. The International Electrotechnical Commission (IEC) standards define the concepts of spectral and time grouping required for such measurements. This paper demonstrates that the procedures defined in the IEC standards are not sufficiently accurate when several close interharmonic tones interact due to the lack of stability of the values that the Discrete Fourier Transform obtains in each sampling window, and to the inaccuracy in the measurement of interharmonic groups and rates when using the Hanning window. This paper proposes novel solutions based on time aggregation and the use of other groupings and alternative windows. The results obtained are compared with the results produced by applying the rectangular window indicated in the standards, using sensitivity analysis varying one of the tones and using experimental results measuring the output signals of frequency inverters driving induction motors. The proposed method achieves greater accuracy and stability in the measurement of spectral groupings and their related distortion rates in signals with abundant and dispersed interharmonic content.
PB Elsevier
SN 0378-7796
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/52105
UL https://uvadoc.uva.es/handle/10324/52105
LA eng
NO Electric Power Systems Research, 2022, vol. 206, 107833
NO Producción Científica
DS UVaDOC
RD 12-sep-2024