For further understanding the superconducting characteristics of the superconducting tape and the rule of the establishment of quench resistance in the DC superconducting current limiter under the DC short circuit current

the direct current impulse experiment is performed on the superconducting tape

and the quench resistance characteristic of the tape under the action of the impulse current is measured. It is obtained that the quench resistance per unit length of the superconducting tape has a fixed functional relationship with its heat generation. Based on this

a simulation model of the resistance and temperature rise of the superconducting tape with variable length is set up

the reason for the irreversible damage of the superconducting tape is analyzed

and the reliability of the model is verified by experiments. Based on this model

the superconducting assembly in the 5 kV hybrid superconducting current limiter is designed. This method also has strong guiding significance for the design of other superconducting current limiters.