Electrical Insulation Characteristics of PPLP as a HTS DC Cable Dielectric and GFRP as Insulating Material for Terminations

Author

Kim, S.H. ; Choi, Jun H. ; Kim, W.J. ; Kim, Kwang Lok ; Lee, H.G. ; Kim, Yong Sin ; Jang, H.M. ; Lee, Sol Kyu

Author_Institution

Dept. of Electr. Eng., Gyeongsang Nat. Univ. & Eng. Res. Inst., Jinju, South Korea

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

7700104

Lastpage

7700104

Abstract

A high-temperature superconducting (HTS) DC cable system has attracted a great deal of interest from the view point of low loss, dense structure and large capacity compared to HTS AC cable system. It has a HTS cable and a termination. A HTS DC cable system consists of a conductor, cooling system and electrical insulation. To realize the HTS DC cable system, it is important to study not only high current capacity and low loss of conductor but also optimum electrical insulation at cryogenic temperature. The electrical insulation technology of HTS DC cable and termination must be solved for the long life, reliability and compact of cable. In this paper, we will discuss mainly on the electrical insulation characteristics and the insulation design of 220 kV class HTS DC cable. Voltage-time (V-t) characteristics of laminated polypropylene paper (PPLP) in LN₂ were studied. Furthermore, the surface flashover characteristics of glass fiber reinforced plastic (GFRP) for termination insulators under DC and lightning impulse voltage were studied.

Keywords

cryogenics; flashover; high-temperature superconductors; insulating materials; polymers; reliability; superconducting cables; GFRP; HTS AC cable system; HTS DC cable dielectric system; PPLP electrical insulation characteristics; conductor; cooling system; cryogenic temperature; glass fiber reinforced plastic; high current capacity; high-temperature superconducting DC cable system; insulating material; laminated polypropylene paper; lightning impulse voltage; optimum electrical insulation; reliability; surface flashover characteristics; voltage 220 kV; voltage-time characteristics; Cable insulation; Flashover; High temperature superconductors; Power cables; Superconducting cables; Cable insulation; dielectric breakdown; dielectric materials; superconducting devices;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2011.2181470

Filename

6112202