Effect of high voltage impulses on partial discharge activity in a cavity embedded in paper insulation
2012 (English)In: 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), IEEE , 2012, 133-136 p.Conference paper (Refereed)
High voltage impulses in electrical power systems are mainly caused by lightning strikes and switching operations. The dielectric properties of a particular insulation at the instant of interaction with a high voltage impulse would determine the level of the degradation of the electrical insulation caused by the high voltage impulse. In this work, the effect of high voltage impulses on the partial discharge (PD) parameters was investigated. The investigation was done in test samples consisting of a cavity deliberately introduced between oil-impregnated papers used in power transformer bushings. The measurement results presented in this paper show that high voltage impulses can have a large impact on the behavior of the PD parameters if the test sample is aged by partial discharges, but a smaller impact when the test sample is unaged.
Place, publisher, year, edition, pages
IEEE , 2012. 133-136 p.
, Conference on Electrical Insulation and Dielectric Phenomena. Annual Report, ISSN 0084-9162
Electrical power system, High voltage, Lightning strikes, Measurement results, Oil-impregnated paper, Paper insulation, Partial discharge activity, PD parameters, Switching operations, Test samples, Transformer bushings
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-105037DOI: 10.1109/CEIDP.2012.6378739ISI: 000316899800028ScopusID: 2-s2.0-84872091683ISBN: 978-1-4673-1252-3OAI: oai:DiVA.org:kth-105037DiVA: diva2:568005
2012 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2012; Montreal, QC; Canada; 14 October 2012 through 17 October 2012
QC 201211152012-11-152012-11-152015-02-06Bibliographically approved