Detail publikace

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

DREXLER, P. ČÁP, M. FIALA, P. STEINBAUER, M. KADLEC, R. KAŠKA, M. KOČIŠ, L.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The 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.

Klíčová slova

partial discharge; ultra-high frequency; spatial localization; electromagnetic interference

Autoři

DREXLER, P.; ČÁP, M.; FIALA, P.; STEINBAUER, M.; KADLEC, R.; KAŠKA, M.; KOČIŠ, L.

Vydáno

22. 2. 2019

Nakladatel

MDPI

ISSN

1424-8220

Periodikum

SENSORS

Ročník

19

Číslo

4

Stát

Švýcarská konfederace

Strany od

1

Strany do

21

Strany počet

21

URL

https://www.mdpi.com/1424-8220/19/4/923

Plný text v Digitální knihovně

http://hdl.handle.net/11012/179679

BibTex

@article{BUT155792,
  author="Petr {Drexler} and Martin {Čáp} and Pavel {Fiala} and Miloslav {Steinbauer} and Radim {Kadlec} and Miloš {Kaška} and Lubomír {Kočiš}",
  title="A Sensor System for Detecting and Localizing Partial Discharges in Power Transformers with Improved Immunity to Interferences",
  journal="SENSORS",
  year="2019",
  volume="19",
  number="4",
  pages="1--21",
  doi="10.3390/s19040923",
  issn="1424-8220",
  url="https://www.mdpi.com/1424-8220/19/4/923"
}