Nonlinear dielectric behaviour of insulating oil under HVDC stress as a result of ion drift

Author

Backhaus, K. ; Speck, J. ; Hering, M. ; Grossmann, S. ; Fritsche, R.

Author_Institution

IEEH, Tech. Univ. Dresden, Dresden, Germany

fYear

2014

fDate

8-11 Sept. 2014

Firstpage

1

Lastpage

4

Abstract

The paper presents two nonlinear dielectric effects from literature in mineral insulating oil, when stressed with DC voltage. In the first part it is shown how current time measurements fit Kerr field strength measurements. In the second part, the nonlinear current time effect is noted for polarity reversal. Both effects are caused by oil intrinsic charge carriers and their special dielectric properties. The current-time-behaviour and the nonlinear field strength distribution are calculated solving the Poisson-Nernst-Planck-equation time dependently.

Keywords

HVDC power transmission; Poisson equation; dielectric properties; electric field measurement; insulating oils; DC voltage; HVDC stress; Kerr field strength measurements; Poisson-Nernst-Planck-equation time; current-time-behaviour; dielectric properties; ion drift; mineral insulating oil; nonlinear current time effect; nonlinear dielectric effects; nonlinear field strength distribution; oil intrinsic charge carriers; polarity reversal; time measurements; Charge carriers; Conductivity; Current measurement; Dielectrics; Electrodes; Equations; Mathematical model;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application (ICHVE), 2014 International Conference on

Conference_Location

Poznan

Type

conf

DOI

10.1109/ICHVE.2014.7035453

Filename

7035453