Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/53287
Título
A study of the effects of time aggregation and overlapping within the framework of IEC standards for the measurement of harmonics and interharmonics
Autor
Año del Documento
2019
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Applied Sciences, 2019, vol. 9, n. 21, 4549
Zusammenfassung
The increasing incorporation of power electronics and other non-linear loads, in addition to their energy advantages, also implies a poor power quality, especially as regards harmonic pollution. Different solutions have been proposed to measure harmonic content, taking the International Electrotechnical Commission (IEC) standards as a reference. However, there are still some issues related to the measurement of the harmonic, and especially, interharmonic content. Some of those questions are addressed in this work, such as the problem derived from the instability of the values obtained by applying the discrete Fourier transform to each sampling window, or the appearance of local peaks when there are tones separated by multiples of the resolution. Solutions were proposed based on time aggregation and the overlapping of windows. The results demonstrate that aggregation time, window type, and overlapping can improve the accuracy in harmonic measurement using Fourier transform-based methods, as defined in the standards. The paper shows the need to consider spectral and time groupings together, improving results by using an appropriate percentage of overlap and an adaptation of the aggregation time to the harmonic content.
Palabras Clave
Harmonics
Armónicos
Interharmonics
Interarmónicos
ISSN
2076-3417
Revisión por pares
SI
Version del Editor
Propietario de los Derechos
© 2019 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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