Space charge build-up in XLPE-cable with temperature gradient

Author

Holboll, Joachim T. ; Henriksen, Mogens ; Hjerrild, Jesper

Author_Institution

Dept. of Electr. Power Eng., Tech. Univ. Denmark, Lyngby, Denmark

Volume

1

fYear

2000

fDate

2000

Firstpage

157

Abstract

Space charge build-up in standard XLPE insulated AC cables has been studied under varying temperature and field conditions. The cables were triple-extruded with the inner semicon on a solid aluminum conductor, 5.5mm XLPE-insulation and an outer semicon. The cables were stressed up to 15kV/mm DC and temperatures were applied in the 20 - 80°C range with gradients across the insulation of up to 15°C. In this paper, the observed charge phenomena in the bulk and at the interfaces are related to the external conditions, in particular to the temperature gradient. The measured space charge distributions are compared to calculated values, based on available conduction models and the deviations are discussed thoroughly

Keywords

XLPE insulation; cable testing; insulation testing; power cable insulation; power cable testing; space charge; temperature distribution; 20 to 80 C; 5.5 mm; XLPE insulated AC cables; XLPE-cable; conduction models; inner semicon; interfaces; outer semicon; solid aluminum conductor; space charge build-up; space charge distributions; temperature gradient; Aluminum; Cable insulation; Conductivity; Conductors; Current density; Current measurement; Pulse measurements; Space charge; Temperature; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2000 Annual Report Conference on

Conference_Location

Victoria, BC

Print_ISBN

0-7803-6413-9

Type

conf

DOI

10.1109/CEIDP.2000.885251

Filename

885251