Research of the Impact Resistance Capability of YBCO Tapes for DC Fault Current Limiter

摘要

The impact resistance capability of YBCO tapes is an important basis for the safe and stable operation of superconducting current limiting devices in DC grids. Since the impact damage of superconducting materials is mainly related to the heat quantity of impact process. Therefore, high-capacity DC impact can be applied on YBCO tapes by prolonging the impact time, based on the energy equivalent principle, which can reduce the requirements for the impact power source capacity as well as voltage. The DC impact test method is indicated in this paper and the impact resistance capability of YBCO tape is showed by the test result.