Partial discharge activity in electrical insulation for high temperature superconducting (HTS) cables

Author

Okubo, H. ; Kojima, H. ; Endo, F. ; Sahara, K. ; Yamaguchi, R. ; Hayakawa, N.

Author_Institution

EcoTopia Sci. Inst., Nagoya Univ., Nagoya

Volume

15

Issue

3

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

647

Lastpage

654

Abstract

This paper discusses electrical insulation characteristics of liquid nitrogen (LN₂) / polypropylene (PP) laminated paper composite insulation system for the practical electrical insulation design of high temperature superconducting (HTS) cables. Partial discharge (PD) inception, propagation and breakdown (BD) characteristics under ac voltage application were obtained and discussed at atmospheric and pressurized conditions. Experimental results were analyzed quantitatively and revealed that void- type discharge was categorized as an important form of discharge to characterize the transition of PD activity leading to BD.

Keywords

high-temperature superconductors; paper; partial discharges; power cable insulation; breakdown; electrical insulation; high temperature superconducting cables; laminated paper composite insulation polypropylene system; partial discharge; void- type discharge; Cable insulation; Coaxial cables; Dielectric liquids; Dielectrics and electrical insulation; High temperature superconductors; Nitrogen; Partial discharges; Pulse measurements; Superconducting cables; Voltage;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2008.4543100

Filename

4543100