In the case of high temperature superconducting（HTS） cable being applied into 10 kV distribution network

it is necessary to perform short circuit fault analysis

and fully understand the temperature transient response process of superconducting cable when short circuit fault occurs

in order to formulate fault protection measures to prevent power supply reliability problems caused by superconducting cable permanent damage.Based on the analysis of the strong coupling relationship between the resistivity

critical current density and operating temperature of YBCO HTS tapes

combined with the heat exchange between YBCO HTS tapes and liquid nitrogen refrigeration environment

a novel electro-thermal coupling module of HTS tapes was developed in PSCAD/EMTDC

and a 10 kV three-phase HTS AC cable model was built.Based on the electric thermal transient response process of superconducting cable in case of short-circuit fault

the longest allowable duration of short-circuit current impact of superconducting cable is calculated

which provides basis for short-circuit fault protection measures of superconducting cable

so as to prevent the permanent damage of the HTS cable

and improve the possibility of utilization of high-temperature superconducting cable in the power distribution network.