Initiation and formation of partial discharges (PD) in mineral based insulating oil

Author

Borsi, H. ; Schröder, U.

Author_Institution

Schering-Inst. of High Voltage Tech. & Eng., Hannover Univ., Germany

fYear

1993

fDate

19-23 Jul 1993

Firstpage

332

Lastpage

336

Abstract

The authors report the results of fundamental investigations concerning the behavior of partial discharges (PD) in mineral-based oil with the aim of characterizing the physical mechanisms that lead to the initiation and formation of PD pulses. The influence of temperature, moisture, and pressure on the PD inception voltage, the apparent charge, and the number of PD pulses is studied. In addition, results obtained by investigating the shape of PD pulses and the behavior of visible PD channels using the schlieren method are explained. The results show that the PD process in mineral-based insulating oil can be divided into several independent physical processes, each characterized by different PD parameters

Keywords

insulating oils; inception voltage; mineral based insulating oil; moisture; partial discharges; pressure; schlieren method; temperature; visible PD channels; Dielectrics and electrical insulation; Minerals; Moisture; Oil insulation; Partial discharges; Petroleum; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Dielectric Liquids,1993., ICDL '93., IEEE 11th International Conference on

Conference_Location

Baden-Dattwil

Print_ISBN

0-7803-0791-7

Type

conf

DOI

10.1109/ICDL.1993.593962

Filename

593962