Metrological Approach for Identifying Abnormalities and the Causes of Harmonics in Electrical Power Grids using Wavelets
Year: 2025
Type: article
Abstract: In this work, current and voltage time series are analyzed using the continuous wavelet transform (CWT). It is shown that, in contrast to a Fourier transform, a CWT enables the detection and analysis of transient and short-term disturbances in power grids. This is particularly important during the commissioning and maintenance of power systems. So-called Daubechies wavelets are used as purposes. In addition, the family of complex Gaussian wavelets also allows resonance mode analysis. This approach enables the real-time series of current and voltage to be transformed into a complex time series. This shows that wavelets can be used to make statements about the active power transit even in the case of short-term disturbances in the power grid. Finally, practical examples of the application of this method complete this work.
Source: Advances in radio science
Authors: Helge Lorenzen, Sebastian Koj, Saba Mylvaganam
Language: English
Topic: Power Quality and Harmonics
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $226
OpenAlex ID: W4413286958