Numerical Analysis and Electrical Insulation Design of a Single-Phase 154 kV Class Non-Inductively Wound Solenoid Type Superconducting Fault Current Limiter

Author

Jin Bae Na ; Hyoungku Kang ; Tae Kuk Ko

Author_Institution

Sch. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

22

Issue

3

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

5602104

Lastpage

5602104

Abstract

The electrical insulation design of high voltage superconducting fault current limiters (SFCLs) should be confirmed for the stabilization of the power grid. This paper describes numerical analysis for high voltage SFCLs based upon the AC and lightning impulse dielectric tests. To calculate the field utilization factor, the electric field distributions for numerical analysis were calculated by finite element method (FEM) simulation tool. The correlation of experiments results and the field utilization factor was investigated. From the results, the electric field criterion of liquid nitrogen at 200 kPa was calculated. Furthermore, safety factor was also considered to design single-phase 154 kV class SFCL. This insulation design in liquid nitrogen focused only two parts of SFCL. Part 1 is gap distance between a cryostat and superconducting coils. Part 2 is gap distance between series-connections of non-inductively wound solenoid type coils.

Keywords

cryostats; finite element analysis; insulation; power grids; superconducting coils; superconducting fault current limiters; FEM; cryostat; electric field distributions; electrical insulation design; field utilization factor; finite element method simulation tool; high voltage superconducting fault current limiters; lightning impulse dielectric tests; liquid nitrogen; noninductively wound solenoid type coils series connection; numerical analysis; power grid stabilization; pressure 200 kPa; single-phase class SFCL; single-phase class noninductively wound solenoid; superconducting coils; voltage 154 kV; Coils; Electric fields; Electrodes; Finite element methods; Insulation; Lightning; Solenoids; AC dielectric tests; conceptual insulation design of 154 KV SFCL; non-inductively wound solenoid type; sub-cooled liquid nitrogen; superconducting fault current limiters;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2011.2182333

Filename

6119204