With the development of the national economy

the short-circuit current level of the power system is in-creasing

causing increasingly serious thermal shock and mechanical shock to the power equipment in the system. Inorder to limit the short-circuit current

this paper proposes a superconducting fault current limiter

which is com-posed of parallel superconducting tapes reactance

vacuum circuit breaker

electromagnetic repulsion mechanismparts. This paper studies the quench resistance characteristics

and superconducting tapes and parallel shunt imped-ance characteristics

simulation mode analysis of the motion characteristics of the electromagnetic repulsion mecha-nism. On this basis

the working principle of the current driving type superconducting fault current limiter is present-ed. Through the research

we can see that the tapes have set detection

a trigger and the limiting characteristics ofshunt impedance can well play a diversion and protection strip;current drive type superconducting fault current lim-iter can achieve a wide range of limiting effect and satisfy the system requirements of reclosing. Finally

126kV tothe current driving type superconducting fault current limiter as an example

the AC loss is calculated.When the cur-rent in the superconducting tape is 75% of the critical current

the loss power is only 715.7 k W

which shows that theAC loss is small.