电阻型超导限流器的限流和恢复特性仿真分析研究

打开文本图片集

关键词：电阻型超导限流器；超导仿真；限流电阻；恢复特性中图分类号：TM725文献标志码：ADOI：10.7652/xjtuxb202602015 文章编号：0253-987X（2026）02-0156-10

Abstract： To further investigate the recovery performance of superconducting fault current limiters and accurately determine their recovery state，a simulation analysis was conducted on the currentlimiting resistance and recovery characteristics of resistive superconducting fault current limiters （R-SFCLs）. Based on experimentally obtained per-unit resistance-Joule heat （R-Q） fiting curves for ST-12-L superconducting tapes and the electric field-current density（E-J） power-law relation for superconductors，combined with the heat transfer equation for liquid nitrogen phase change， both an R-Q recovery model and an EJ recovery model for R-SFCLs were established in SIMULINK. The fault current-limiting and recovery characteristics of ST-12-L superconducting tapes under LC short-circuit conditions were simulated and analyzed. An experimental circuit for current limiting and recovery of parallel superconducting tapes was constructed based on an LC power source and a recovery test loop. Quench current-limiting and recovery tests were performed on the superconducting tapes under LC short-circuit impulses，and the experimental results were compared with the simulations. The comparison shows that in current-limiting simulation，the maximum errors of the positive and negative current peaks between the EJ recovery model and the experiment are 3.6% and 15% ，respectively，while those for the R⋅Q recovery model are 2.3% （204号 and 8.6% ，indicating that the R–Q model provides more accurate current-limiting simulation. In recovery time simulation，the maximum error of the R⋅Q recovery model is only 0.120s ，which is significantly smaller than that of the EJ recovery model. The RQ recovery model can effectively simulate the quench and recovery process of superconducting tapes and promote the application of resistive superconducting fault current limiters in power systems.

Keywords： resistive type superconducting fault current limiter; superconducting simulation; current limiting resistance；recovery characteristics

随着风电、光伏等新能源发电的不断发展，大量直流电源的输人使得新型电力系统的短路电流幅值不断增大，同时电网自身在经济发展中的不断扩张，也促进了电力系统的短路电流幅值和直流分量的不断增加。（剩余15944字）