Abstract
The resistive superconducting fault current limiter is well known for its simple structure and outstanding current-limiting effect, and it is broadly applied in power grid systems. The second-generation high-temperature superconductor (HTS) tape, of higher structural strength and greater room-temperature resistance, is well suited for application in resistive superconducting fault current limiters. The quenching caused by overcurrent in the HTS tape is a complexed coupling effect of several physical factors. The tape structure and properties directly impact the ultimate HTS tape’s quench performance. In this study, various SS316-laminated HTS tapes, of different critical currents, room-temperature resistances, and masses, were prepared. The pulse impact parameters of the various tape samples were measured using the RLC high-current impact test platform. By analyzing the resultant data, a quantitative assessment methodology to measure a tape’s tolerance toward impact was developed. The dependence of the HTS tape’s tolerance toward impact on its critical current, room-temperature resistance, and mass was studied. This provides numerical guidance on HTS material selection for resistive superconducting fault current limiters.
Highlights
Academic Editor: Davide BrunelliAs power systems increase in capacity and complexity, large short-circuit fault current is one of the main factors threatening the safety and stability of power systems
Samples 1–4 used 80 + 80 μm stainless steel for lamination, while the room-temperature resistance of the tapes was kept constant at 100 mΩ/m, Tc of the superconductor layer was 92 K, and critical currents of the tapes were varied with different high-temperature superconductor (HTS) layer thickness
Tape were very low, their resistivity was much lower than that of other materials, and the resistance of silver and copper layers varied greatly with temperature, which had a significant impact on the total resistance of HTS tape
Summary
As power systems increase in capacity and complexity, large short-circuit fault current is one of the main factors threatening the safety and stability of power systems. Extensive studies have been carried out on testing HTS tapes for resistive fault current limiter application. Compared the tape structures from different postprocessing treatments in the application of SFCL; Lacroix et al [33,34] developed a novel structure to increase the NZPV (normal zone propagation velocity) of HTS tape during impulse impact; Zhang et al [35] and. Experiment, and photography, the effects of metal layer constituents on the impact tolerance and characteristics of stainless-steel laminated HTS tapes are studied. This provides a basis for the selection of tapes for resistive superconducting current limiters
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