Application of hilbert transform for power quality indicators monitoring in general purpose grids-Reference-Cited by-同舟云学术

Application of hilbert transform for power quality indicators monitoring in general purpose grids

Published:2024-05-05 Issue:2 Volume:2024 Page:71-83
ISSN:2786-7633
Container-title:System Research in Energy
language:
Short-container-title:Sist. dosl. energ.

Author:

,Kovtun Svitlana^ORCID,Kuts Yurii^ORCID, ,Malko Volodymyr^ORCID, ,Fryz Mykhailo^ORCID, , ,Scherbak Leonid^ORCID, ,Kuts Volodymyr^ORCID,

Abstract

During the operation of power grids, abnormal modes occur that lead to a decrease or increase in the grid voltage beyond permissible values, the appearance of high-frequency noise components and grid signal fading’s, which fading’s the power quality and can lead to the failure of electrical equipment. This requires constant monitoring of power quality indicators. The methods of measuring power quality indicators have been examined and analyzed in the article, their advantages and limitations have been considered, and the inefficiency of using the Fourier transform for estimating of power quality indicators in time domain has been justified. The application of Hilbert transform has been suggested for monitoring the indicators of power quality in general-purpose grids, which include measuring the duration and magnitude of voltage dips, the duration of voltage fading, localization and determination of the duration of high-frequency noise interference in the power grid, determination of phase shift during voltage dip. A simulation of the process of determining the indicators of power quality in time domain and the time intervals during which these indicators exceed the established limits has been performed, which confirmed the effectiveness of using the Hilbert transform in the systems of their monitoring. Keywords: general purpose power grid, power quality indicators, Hilbert transform.

Publisher

National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)

Reference19 articles.

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