Experimental study on adjustability of superconducting fault current limiter with adjustable trigger current level

Fault analyses of power systems including superconducting fault current limiters (SCFCLs) point out that accuracy of the trigger current level of an SCFCL should be in a few tens of percents. An SCFCL with an adjustable trigger current level is proposed. A trial SCFCL of this type was designed and made; basic tests on the SCFCL were carried out. Adjustability of the trigger current level of the proposed SCFCL is studied experimentally in this paper.