Aging of oil-impregnated transformer insulation studied through partial discharge analysis

Author

Chen, X. ; Morshuis, P.H.F. ; Zhuang, Q. ; Smit, J.J. ; Xu, Z.

Author_Institution

High-Voltage Technol. & Manage., Delft Univ. of Technol., Delft, Netherlands

fYear

2010

fDate

4-9 July 2010

Firstpage

1

Lastpage

4

Abstract

The aging of the epoxy-paper insulation of an oil-impregnated transformer was studied through partial discharge analysis. Accelerated electrical aging tests were carried out on samples of transformers windings, with and without paper insulation. Partial discharge (PD) measurements according to standard IEC 60270 were performed periodically during aging, and partial discharge phase patterns were recorded throughout the aging test. Some representative PD phenomena were obtained from the experimental results. The evolution of typical PD patterns is reported until breakdown.

Keywords

life testing; partial discharge measurement; transformer oil; accelerated electrical aging tests; epoxy-paper insulation; oil-impregnated transformer insulation; partial discharge analysis; partial discharge measurements; Aging; Cavity resonators; Discharges; Oil insulation; Partial discharges; electrical aging; partial discharge; transformer insulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics (ICSD), 2010 10th IEEE International Conference on

Conference_Location

Potsdam

Print_ISBN

978-1-4244-7945-0

Electronic_ISBN

978-1-4244-7943-6

Type

conf

DOI

10.1109/ICSD.2010.5568110

Filename

5568110