The use of three dimensional filters for on-line partial discharge localisation in large transformers

Muhamad Safwan Abd. Rahman, P. Rapisarda, P. L. Lewin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Partial discharge (PD) activity develops in high voltage transformers due to ageing processes in the insulation system which are totally unavoidable. Moreover, operational overstressing and defects introduced during manufacture can also cause the existence of PD activity. The presence of this activity needs to be identified and treated, otherwise it will lead to further ageing and degradation processes until eventually there may be catastrophic failure. Previous reported work by the authors used Wavelet Transforms and Principal Component Analysis (PCA) separately in order to develop an approach for PD localisation within a transformer winding which is more suitable for implementation in an off-line mode. In this paper a new technique has been developed for on-line application using filters designed based on wavelet functions in the frequency domain and PCA loading coefficients. The combination of wavelet and PCA produces a unique frequency spectrum for the three dimensional filters. A transfer function of corresponding frequency spectrum can be obtained using estimation based on an IIR filter approximation. This paper reports on selection of filter order and its influence on PD source localisation. Ultimately, this study can be used to determine the optimum selection of the three dimensional filters for a given discharging transformer that will facilitate on-line localisation of the PD source.

Original languageEnglish
Title of host publicationEIC 2014 - Proceedings of the 32nd Electrical Insulation Conference
PublisherIEEE Computer Society
Pages10-14
Number of pages5
ISBN (Print)9781479927876
DOIs
Publication statusPublished - 01 Jan 2014
Event32nd Electrical Insulation Conference, EIC 2014 - Philadelphia, PA, United States
Duration: 08 Jun 201411 Jun 2014

Publication series

NameEIC 2014 - Proceedings of the 32nd Electrical Insulation Conference

Other

Other32nd Electrical Insulation Conference, EIC 2014
CountryUnited States
CityPhiladelphia, PA
Period08/06/1411/06/14

Fingerprint

Partial discharges
Principal component analysis
Aging of materials
Transformer windings
IIR filters
Wavelet transforms
Transfer functions
Insulation
Degradation
Defects
Electric potential

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Abd. Rahman, M. S., Rapisarda, P., & Lewin, P. L. (2014). The use of three dimensional filters for on-line partial discharge localisation in large transformers. In EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference (pp. 10-14). [6869336] (EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference). IEEE Computer Society. https://doi.org/10.1109/EIC.2014.6869336
Abd. Rahman, Muhamad Safwan ; Rapisarda, P. ; Lewin, P. L. / The use of three dimensional filters for on-line partial discharge localisation in large transformers. EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference. IEEE Computer Society, 2014. pp. 10-14 (EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference).
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Abd. Rahman, MS, Rapisarda, P & Lewin, PL 2014, The use of three dimensional filters for on-line partial discharge localisation in large transformers. in EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference., 6869336, EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference, IEEE Computer Society, pp. 10-14, 32nd Electrical Insulation Conference, EIC 2014, Philadelphia, PA, United States, 08/06/14. https://doi.org/10.1109/EIC.2014.6869336

The use of three dimensional filters for on-line partial discharge localisation in large transformers. / Abd. Rahman, Muhamad Safwan; Rapisarda, P.; Lewin, P. L.

EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference. IEEE Computer Society, 2014. p. 10-14 6869336 (EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abd. Rahman MS, Rapisarda P, Lewin PL. The use of three dimensional filters for on-line partial discharge localisation in large transformers. In EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference. IEEE Computer Society. 2014. p. 10-14. 6869336. (EIC 2014 - Proceedings of the 32nd Electrical Insulation Conference). https://doi.org/10.1109/EIC.2014.6869336