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Partial discharge measurement at varied low frequency, and some results from thermally aged stator insulation
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0003-0759-4406
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
2007 (English)In: Proceedings of the 20th Nordic Insulation Symposium (NordIS), 2007, 185-188 p.Conference paper (Refereed)
Abstract [en]

Measurement of partial discharge (PD) at varied low frequency has the potential for greater information about an insulation system than is obtained with single-frequency measurements, and the advantage of low current-requirements of the driving source.  With frequency becoming another controlled variable, there is a heightened need to consider how to present the data.  From the desire to compare and interpret results of measurements at different frequencies there arises the need for appreciation of the effect of recent excitations on the result of a PD measurement.  Results of low-frequency PD measurements on three stator coils are presented here: a comparison of two shows strong variation in frequency dependence, and measurements on the other show the variation of a PD measurement due to varied recent history of excitation of the test-object.  Some indices for comparison of data at different frequencies and amplitudes are considered.

Place, publisher, year, edition, pages
2007. 185-188 p.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-184129OAI: oai:DiVA.org:kth-184129DiVA: diva2:914938
Conference
20th Nordic Insulation Symposium (NordIS)
Funder
Swedish Energy Agency
Note

QC 20160404

Available from: 2016-03-28 Created: 2016-03-28 Last updated: 2016-04-04Bibliographically approved

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