Electrical breakdown characteristics of the XLPE cables under AC, DC and pulsating voltages

Author

Grzybowski, S. ; Fan, J.

Author_Institution

Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA

Volume

1

fYear

1997

Firstpage

389

Abstract

Electrical breakdown strength of the 5 kV XLPE cables was studied under ac, dc and pulsating voltages. The pulsating voltage was obtained by superimposing ac voltage on dc voltage. In the later case, the ratio of ac to dc voltage components (p=Vac/Vdc) was varied between the limits of 0.1<p<10. Both the sound and imperfect cables are used as the test samples. Two types of imperfections are studied: Cables samples with artificial holes and cables samples with embedded needles. Study results shows that the pulsating voltage is an effective way to detect the imperfections inside the XLPE cables

Keywords

XLPE insulation; electric breakdown; insulation testing; power cable insulation; power cable testing; 5 kV; AC voltage; DC voltage; XLPE cable; artificial hole; electrical breakdown strength; embedded needle; imperfection; pulsating voltage; Aging; Breakdown voltage; Cable insulation; Electric breakdown; Insulation testing; Laboratories; Needles; Oil insulation; Power transformer insulation; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on

Conference_Location

Seoul

Print_ISBN

0-7803-2651-2

Type

conf

DOI

10.1109/ICPADM.1997.617618

Filename

617618