PDC measurement evaluation on oil-pressboard samples

Author

Shayegani, A.A. ; Hassan, O. ; Borsi, H. ; Gockenbach, E. ; Mohseni, H.

Author_Institution

Inst. of Electr. Power Syst., Hannover Univ., Germany

Volume

1

fYear

2004

Firstpage

51

Abstract

In this paper the measuring results of polarization and depolarization currents (PDC) on oil-pressboard samples will be presented. The measurements were carried out under different condition and the results compared. For repeatability purpose the samples were provided at specific condition. Moisture of samples was measured by Karl Fischer titration method. To obtain a quantitative parameter from PDC for the evaluation of the moisture content of the solid insulation, the depolarization current curves are decomposed to basic exponential functions. Obtained results show a relation between magnitude of mid decade (100 s - 1000 s) approximate exponential function and moisture content of solid insulation.

Keywords

dielectric depolarisation; dielectric polarisation; organic insulating materials; 100 to 1000 s; Karl Fischer titration method; PDC measurement evaluation; depolarization current; exponential functions; middecade approximate exponential function; oil-pressboard samples; polarization current; samples moisture; solid insulation; Circuit testing; Current measurement; Dielectric measurements; Dielectrics and electrical insulation; Moisture; Petroleum; Polarization; Power transformer insulation; Solids; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics, 2004. ICSD 2004. Proceedings of the 2004 IEEE International Conference on

Print_ISBN

0-7803-8348-6

Type

conf

DOI

10.1109/ICSD.2004.1350287

Filename

1350287