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An experimental validation of partial discharge localization using electromagnetic time reversal
The localization of partial discharge (PD) sources is of importance for the monitoring and maintenance of power transformers. Time difference of arrival (TDoA) based methods are widely adopted in the literature for the localization of PDs. Recently, time reversal (TR) was suggested as an efficient m...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7794480/ https://www.ncbi.nlm.nih.gov/pubmed/33420279 http://dx.doi.org/10.1038/s41598-020-80660-z |
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author | Karami, Hamidreza Azadifar, Mohammad Rubinstein, Marcos Rachidi, Farhad |
author_facet | Karami, Hamidreza Azadifar, Mohammad Rubinstein, Marcos Rachidi, Farhad |
author_sort | Karami, Hamidreza |
collection | PubMed |
description | The localization of partial discharge (PD) sources is of importance for the monitoring and maintenance of power transformers. Time difference of arrival (TDoA) based methods are widely adopted in the literature for the localization of PDs. Recently, time reversal (TR) was suggested as an efficient means to locate PD sources. As opposed to TDoA, which needs at least 4 sensors, TR is able to locate PD sources in power transformers with only one sensor. Moreover, it needs neither line-of-sight wave propagation from the PD sources to the sensor nor time synchronization. In this study, we present for the first time an experimental demonstration of the ability of the TR process to locate PD sources. A typical TR process includes three steps: (1) recording the PD-emitted field by a sensor, (2) time reversing and back injecting the signal into the medium, (3) using a proper criterion to obtain the focusing point which corresponds to the location of the PD source. In this work, we present a laboratory setup in which steps one and two are performed experimentally, both in the frequency and in the time domain. The obtained peak electric field value is used as a criterion in the third step. It is found that the accuracy of the proposed method is better than 2.5 cm in a transformer tank model with dimensions 73 × 73 × 103 cm(3). The effects of the presence of scatterers such as transformer windings are also investigated experimentally and found not to affect the location accuracy of the method. |
format | Online Article Text |
id | pubmed-7794480 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-77944802021-01-12 An experimental validation of partial discharge localization using electromagnetic time reversal Karami, Hamidreza Azadifar, Mohammad Rubinstein, Marcos Rachidi, Farhad Sci Rep Article The localization of partial discharge (PD) sources is of importance for the monitoring and maintenance of power transformers. Time difference of arrival (TDoA) based methods are widely adopted in the literature for the localization of PDs. Recently, time reversal (TR) was suggested as an efficient means to locate PD sources. As opposed to TDoA, which needs at least 4 sensors, TR is able to locate PD sources in power transformers with only one sensor. Moreover, it needs neither line-of-sight wave propagation from the PD sources to the sensor nor time synchronization. In this study, we present for the first time an experimental demonstration of the ability of the TR process to locate PD sources. A typical TR process includes three steps: (1) recording the PD-emitted field by a sensor, (2) time reversing and back injecting the signal into the medium, (3) using a proper criterion to obtain the focusing point which corresponds to the location of the PD source. In this work, we present a laboratory setup in which steps one and two are performed experimentally, both in the frequency and in the time domain. The obtained peak electric field value is used as a criterion in the third step. It is found that the accuracy of the proposed method is better than 2.5 cm in a transformer tank model with dimensions 73 × 73 × 103 cm(3). The effects of the presence of scatterers such as transformer windings are also investigated experimentally and found not to affect the location accuracy of the method. Nature Publishing Group UK 2021-01-08 /pmc/articles/PMC7794480/ /pubmed/33420279 http://dx.doi.org/10.1038/s41598-020-80660-z Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Karami, Hamidreza Azadifar, Mohammad Rubinstein, Marcos Rachidi, Farhad An experimental validation of partial discharge localization using electromagnetic time reversal |
title | An experimental validation of partial discharge localization using electromagnetic time reversal |
title_full | An experimental validation of partial discharge localization using electromagnetic time reversal |
title_fullStr | An experimental validation of partial discharge localization using electromagnetic time reversal |
title_full_unstemmed | An experimental validation of partial discharge localization using electromagnetic time reversal |
title_short | An experimental validation of partial discharge localization using electromagnetic time reversal |
title_sort | experimental validation of partial discharge localization using electromagnetic time reversal |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7794480/ https://www.ncbi.nlm.nih.gov/pubmed/33420279 http://dx.doi.org/10.1038/s41598-020-80660-z |
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