Title :
Quench Characteristics of Current Limiting Elements in a Flux-Lock Type Superconducting Fault Current Limiter
Author :
Choi, Hyo-Sang ; Park, Hyoung-Min ; Cho, Yong-Sun ; Lim, Sung-Hun ; Han, Byoung-Sung
Author_Institution :
Dept. of Electr. Eng., Chosun Univ., Seoul
fDate :
6/1/2006 12:00:00 AM
Abstract :
We investigated the quench characteristics of a flux-lock type superconducting fault current limiter (SFCL) according to the number of the serial connection between the superconducting elements at the subtractive polarity winding of a transformer. The flux-lock type SFCL consists of two coils. The primary coil is wound in parallel to the secondary coil through an iron core, and the secondary coil is connected to the superconducting elements in series. The operation of the flux-lock type SFCL can be divided into the subtractive and the additive polarity windings according to the winding directions between the primary and secondary coils. In this paper, the analyses of voltage, current, and resistance in serial connection between superconducting elements were performed to increase the applied voltage of flux-lock type SFCL. The power burden was reduced through the simultaneous quenching between the superconducting elements. This enabled the flux-lock type SFCL to be easy to increase the capacity of power system
Keywords :
fault current limiters; superconducting coils; transformer cores; transformer windings; coil; current limiting element; flux-lock type superconducting fault current limiter; iron core; quench characteristics; subtractive polarity winding; transformer; Circuit faults; Current limiters; Equivalent circuits; Fault current limiters; Fault currents; Impedance; Inductance; Performance analysis; Superconducting coils; Voltage; Capacity increase; flux-lock type SFCL; simultaneous quenching; subtractive polarity winding; superconducting elements;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.870527
