The effect of angular anisotropy in XLPE insulation on dielectric strength

Author

Cho, Dae-Hee ; Lee, Seung-Yop ; Kim, Young-Ho ; Lee, In-Ho ; Park, Wan-Ki

Author_Institution

LG Cable & Machinery Ltd., Kumi City, South Korea

Volume

4

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

280

Abstract

The aim of this study is to characterize XLPE dielectric strength corresponding to the angular anisotropy in extra high voltage (EHV) power cables. The angular anisotropy in EHV power cable is built up in the extrusion process and known as general fluid phenomena. The authors measured tensile strength as the angular anisotropy and then conducted electrical treeing tests using XLPE specimens. With needle-needle electrode system, the measured tree initiation voltage and time in accordance with the angular anisotropy showed distinctive values as the angular direction. From the results, it can be suggested that the angular anisotropy of XLPE insulation material must be considered as the additional factor that affect dielectric strength in EHV power cables

Keywords

XLPE insulation; EHV power cables; XLPE insulation; angular anisotropy effect; dielectric strength; electrical treeing tests; needle-needle electrode system; tensile strength; tree initiation time; tree initiation voltage;

fLanguage

English

Publisher

iet

Conference_Titel

High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)

Conference_Location

London

ISSN

0537-9989

Print_ISBN

0-85296-719-5

Type

conf

DOI

10.1049/cp:19990847

Filename

821275