A Sensor System for Detecting and Localizing Partial Discharges in Power Transformers with Improved Immunity to Interferences

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dc.contributor.authorDrexler, Petrcs
dc.contributor.authorČáp, Martincs
dc.contributor.authorFiala, Pavelcs
dc.contributor.authorSteinbauer, Miloslavcs
dc.contributor.authorKadlec, Radimcs
dc.contributor.authorKaška, Milošcs
dc.contributor.authorKočiš, Lubomírcs
dc.coverage.issue4cs
dc.coverage.volume19cs
dc.date.accessioned2020-08-04T11:01:12Z
dc.date.available2020-08-04T11:01:12Z
dc.date.issued2019-02-22cs
dc.description.abstractThe paper reports on the solution, principles, and application results related to a system for diagnosing main transformers in power plants via the radiofrequency method. The subject of the diagnostics is the occurrence of partial discharge activity in transformers. The technical solution of the system is characterized in the introductory section of the article. There then follows a description of the operating principle and the implemented novel advanced methods for signal detection and source localization. The results obtained from practical application of the system within the diagnostics of high-power transformers are presented as well. Because ambient electromagnetic disturbance was recognized as a major issue during the system development, novel detection methods were proposed, implemented, and verified. The principal approach utilizes an external radiofrequency sensor to detect outer impulse disturbance and to eliminate disturbance-triggered acquisitions, and it also ensures direct real-time visualization of the desired impulse signals. The ability of weak signal detection was verified via artificial impulse signal injection into the transformer. The developed detection methods were completed with localization techniques for signal source estimation. The desired impulse signal was detected and localized during full operation of the main transformer, despite the presence of strong electromagnetic interference.en
dc.formattextcs
dc.format.extent1-21cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationSENSORS. 2019, vol. 19, issue 4, p. 1-21.en
dc.identifier.doi10.3390/s19040923cs
dc.identifier.issn1424-8220cs
dc.identifier.other155792cs
dc.identifier.urihttp://hdl.handle.net/11012/179679
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofSENSORScs
dc.relation.urihttps://www.mdpi.com/1424-8220/19/4/923cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1424-8220/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectpartial dischargeen
dc.subjectultra-high frequencyen
dc.subjectspatial localizationen
dc.subjectelectromagnetic interferenceen
dc.titleA Sensor System for Detecting and Localizing Partial Discharges in Power Transformers with Improved Immunity to Interferencesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-155792en
sync.item.dbtypeVAVen
sync.item.insts2020.08.14 16:58:45en
sync.item.modts2020.08.14 16:15:38en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav teoretické a experimentální elektrotechnikycs
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Ústav teoretické a experimentální elektrotechniky