Thermal step method for space charge measurements under applied dc field

Author

Notingher, P., Jr. ; Agnel, S. ; Toureille, A.

Author_Institution

Lab. d´´Electrotechnique, Univ. Montpellier 2, France

Volume

8

Issue

6

fYear

2001

fDate

12/1/2001 12:00:00 AM

Firstpage

985

Lastpage

994

Abstract

The thermal step method (TSM) is a nondestructive technique which measures the distribution of the electric field and space charge density across solid insulating materials. This work first reviews the principle and the basic equations of the TSM when used on a short circuited flat insulating structure (film or plate). An evolution of the method, which allows the determination of space charge distribution in an insulator while submitted to an external dc field, is then described. The fundamentals, the experimental setup and the validation of this technique on flat samples and on power cables are presented and discussed

Keywords

charge measurement; dielectric measurement; insulation testing; space charge; DC field; electric field distribution; flat sample; nondestructive technique; power cable; solid insulating material; space charge measurement; thermal step method; Charge measurement; Circuits; Current measurement; Density measurement; Dielectrics and electrical insulation; Electric variables measurement; Equations; Power cables; Solids; Space charge;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/94.971455

Filename

971455