An experimental validation of partial discharge localization using electromagnetic time reversal

Abstract 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 ef...

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Autores principales:	Hamidreza Karami, Mohammad Azadifar, Marcos Rubinstein, Farhad Rachidi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f3948102c88b4fada0cfdb9c37b8822a
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spelling	oai:doaj.org-article:f3948102c88b4fada0cfdb9c37b8822a2021-12-02T15:08:22ZAn experimental validation of partial discharge localization using electromagnetic time reversal10.1038/s41598-020-80660-z2045-2322https://doaj.org/article/f3948102c88b4fada0cfdb9c37b8822a2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80660-zhttps://doaj.org/toc/2045-2322Abstract 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 cm3. 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.Hamidreza KaramiMohammad AzadifarMarcos RubinsteinFarhad RachidiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hamidreza Karami Mohammad Azadifar Marcos Rubinstein Farhad Rachidi An experimental validation of partial discharge localization using electromagnetic time reversal
description	Abstract 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 cm3. 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	article
author	Hamidreza Karami Mohammad Azadifar Marcos Rubinstein Farhad Rachidi
author_facet	Hamidreza Karami Mohammad Azadifar Marcos Rubinstein Farhad Rachidi
author_sort	Hamidreza Karami
title	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_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_sort	experimental validation of partial discharge localization using electromagnetic time reversal
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f3948102c88b4fada0cfdb9c37b8822a
work_keys_str_mv	AT hamidrezakarami anexperimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT mohammadazadifar anexperimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT marcosrubinstein anexperimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT farhadrachidi anexperimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT hamidrezakarami experimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT mohammadazadifar experimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT marcosrubinstein experimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal AT farhadrachidi experimentalvalidationofpartialdischargelocalizationusingelectromagnetictimereversal
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An experimental validation of partial discharge localization using electromagnetic time reversal

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