Assessment of insulation condition of large power transformers by on-site electrical diagnostic methods

Author

Bräunlich, Reinhold ; Hässig, Martin ; Fuhr, Jitka ; Aschwanden, Thomas

Author_Institution

FKH Fachkommission fur Hochspannungsfragen, Zurich, Switzerland

fYear

2000

fDate

2000

Firstpage

368

Lastpage

372

Abstract

This contribution describes an off-line partial discharge (PD) detection technique for large power transformers in the substation environment. It is demonstrated that off-line PD-analysis is one of the most meaningful method to assess the insulation condition of large power transformers. Details of an advanced PD-detection technique and on-site measuring procedure are described and illustrated with practical examples. The interpretation of results from PD-tests needs complementary diagnostic methods, such as dissolved gas-in-oil-analysis or integral dielectric measurements

Keywords

insulation testing; partial discharge measurement; power transformer insulation; power transformer testing; off-line partial discharge detection; on-site electrical diagnosis; power transformer insulation; substation; Costs; Dielectrics and electrical insulation; Frequency; Partial discharge measurement; Partial discharges; Power generation; Power transformer insulation; Power transformers; Substations; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on

Conference_Location

Anaheim, CA

ISSN

1089-084X

Print_ISBN

0-7803-5931-3

Type

conf

DOI

10.1109/ELINSL.2000.845527

Filename

845527