Dielectric properties of 500 m long HTS power cable

Author

Takahashi, T. ; Suzuki, H. ; Ichikawa, M. ; Okamoto, T. ; Akita, S. ; Maruyama, S. ; Kimura, A.

Author_Institution

Central Res. Inst. of Electr. Power Ind., Kanagawa, Japan

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

1767

Lastpage

1770

Abstract

The 500-m high temperature superconducting (HTS) cable has been constructed in the Yokosuka area, CRIEPI, by CRIEPI, The Furukawa Electric Co. and Super-GM. Its design voltage is 77 kV and the thickness of the electrical insulation layer should be 8 mm made of semi-synthetic paper (polypropylene laminated paper). During cooling, the capacitance and dielectric loss tangent were measured periodically. After cooling, which means that the HTS cable was fully filled with liquid nitrogen (LN₂), the initial voltage withstand test was carried out. This paper describes the design method of the electrical insulation layer including determination of the testing voltage and the result of the initial voltage withstand test, and the permittivity calculated from the capacitance, and dielectric loss tangent.

Keywords

capacitance; dielectric losses; dielectric measurement; high-temperature superconductors; permittivity; power cable insulation; power cable testing; superconducting cables; 500 m; 77 kV; 8 mm; CRIEPI; Furukawa Electric Company; N₂; Super-GM; Yokosuka area; capacitance; dielectric loss tangent; dielectric measurement; dielectric properties; electrical insulation layer; initial voltage withstand test; insulation testing; liquid nitrogen impregnated insulation; permittivity; polypropylene laminated paper; semisynthetic paper; superconducting cables; Capacitance; Cooling; Dielectric loss measurement; Dielectric losses; Dielectrics and electrical insulation; High temperature superconductors; Insulation testing; Power cables; Superconducting cables; Voltage; Dielectric measurement; insulation testing; liquid nitrogen impregnated insulation; superconducting cables;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.849281

Filename

1439994