Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers
Instrument transformers are a critical component of power plants, widely distributed due to their essential role in measuring and protecting the entire power system. Given their continuous exposure to environmental and electrical stresses, and the potential for explosive failures that can jeopardize...
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Electrical Engineering Institute Nikola Tesla
2024-01-01
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| Series: | Zbornik Radova: Elektrotehnički Institut "Nikola Tesla" |
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| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/0350-8528/2024/0350-85282434049M.pdf |
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| author | Milić Momčilo Jovanović Đorđe Radin Vesna Dimitrijević Marko |
| author_facet | Milić Momčilo Jovanović Đorđe Radin Vesna Dimitrijević Marko |
| author_sort | Milić Momčilo |
| collection | DOAJ |
| description | Instrument transformers are a critical component of power plants, widely distributed due to their essential role in measuring and protecting the entire power system. Given their continuous exposure to environmental and electrical stresses, and the potential for explosive failures that can jeopardize power facility operations and disrupt power supply, regular electrical testing is crucial to assess their condition and operational reliability. One non-invasive testing method for instrument transformers is acoustic (ultrasound) analysis. This technique involves placing an acoustic piezo-sensor on the grounded wall of the transformer tank, at a safe distance from high-voltage components. Short-term data acquisition and subsequent analysis are then performed. This method is particularly advantageous for power plants as it requires minimal intervention and does not necessitate disconnecting the transformer from operation. Acoustic detection of partial discharges is often complemented by gas chromatographic analysis of insulating oil. This combined approach provides robust confirmation of partial discharge activity within the transformer's insulation system. This paper will present case studies of ultrasonic detection of partial discharges on 110 kV instrument transformers, where chemical analysis of oil samples corroborated the presence of these detrimental discharges. |
| format | Article |
| id | doaj-art-724df990dc0d4ba386eab0ccd4cc8a59 |
| institution | Kabale University |
| issn | 0350-8528 2406-1212 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Electrical Engineering Institute Nikola Tesla |
| record_format | Article |
| series | Zbornik Radova: Elektrotehnički Institut "Nikola Tesla" |
| spelling | doaj-art-724df990dc0d4ba386eab0ccd4cc8a592025-01-08T16:53:52ZengElectrical Engineering Institute Nikola TeslaZbornik Radova: Elektrotehnički Institut "Nikola Tesla"0350-85282406-12122024-01-01202434496010.5937/zeint34-545580350-85282434049MExamples of ultrasonic detection of partial discharges in case of 110 kV instrument transformersMilić Momčilo0https://orcid.org/0000-0002-3331-8301Jovanović Đorđe1https://orcid.org/0009-0009-3706-5151Radin Vesna2https://orcid.org/0009-0006-0628-2485Dimitrijević Marko3Univerzitet u Beogradu, Elektrotehnički institut Nikola Tesla, Beograd, SerbiaUniverzitet u Beogradu, Elektrotehnički institut Nikola Tesla, Beograd, SerbiaUniverzitet u Beogradu, Elektrotehnički institut Nikola Tesla, Beograd, SerbiaUniverzitet u Beogradu, Elektrotehnički institut Nikola Tesla, Beograd, SerbiaInstrument transformers are a critical component of power plants, widely distributed due to their essential role in measuring and protecting the entire power system. Given their continuous exposure to environmental and electrical stresses, and the potential for explosive failures that can jeopardize power facility operations and disrupt power supply, regular electrical testing is crucial to assess their condition and operational reliability. One non-invasive testing method for instrument transformers is acoustic (ultrasound) analysis. This technique involves placing an acoustic piezo-sensor on the grounded wall of the transformer tank, at a safe distance from high-voltage components. Short-term data acquisition and subsequent analysis are then performed. This method is particularly advantageous for power plants as it requires minimal intervention and does not necessitate disconnecting the transformer from operation. Acoustic detection of partial discharges is often complemented by gas chromatographic analysis of insulating oil. This combined approach provides robust confirmation of partial discharge activity within the transformer's insulation system. This paper will present case studies of ultrasonic detection of partial discharges on 110 kV instrument transformers, where chemical analysis of oil samples corroborated the presence of these detrimental discharges.https://scindeks-clanci.ceon.rs/data/pdf/0350-8528/2024/0350-85282434049M.pdfinstrument transformersacoustic (ultrasonic) methodpartial dischargesgas chromatographic analysis of oil samples |
| spellingShingle | Milić Momčilo Jovanović Đorđe Radin Vesna Dimitrijević Marko Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers Zbornik Radova: Elektrotehnički Institut "Nikola Tesla" instrument transformers acoustic (ultrasonic) method partial discharges gas chromatographic analysis of oil samples |
| title | Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers |
| title_full | Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers |
| title_fullStr | Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers |
| title_full_unstemmed | Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers |
| title_short | Examples of ultrasonic detection of partial discharges in case of 110 kV instrument transformers |
| title_sort | examples of ultrasonic detection of partial discharges in case of 110 kv instrument transformers |
| topic | instrument transformers acoustic (ultrasonic) method partial discharges gas chromatographic analysis of oil samples |
| url | https://scindeks-clanci.ceon.rs/data/pdf/0350-8528/2024/0350-85282434049M.pdf |
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