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Successful DC current limitation above 100 Vm−1 for 50 ms using HTS tapes with critical currents exceeding 750 A/cm-width
Superconductor Science and Technology ( IF 3.6 ) Pub Date : 2021-01-14 , DOI: 10.1088/1361-6668/abceb2
Christian Lacroix 1 , Olivier Lavergne 1 , Thomas Leduc 1 , Flix Dupuis-Desloges 1 , Lucile Moret 1 , Frdric Sirois 1 , Guillaume Escamez 2 , Christian-ric Bruzek 2 , Pascal Tixador 3 , Veit Grosse 4 , Markus Bauer 4
Affiliation  

High-voltage direct current transmission systems are expected to allow the transmission of huge volumes of electricity over long distances. The use of superconducting fault current limiters (SFCLs) based on second-generation (2G) high-temperature superconductor (HTS) coated conductors (CCs) is a promising solution to mitigate fault currents in DC transmission systems. To fabricate a SFCL whose size remains acceptable, which means minimizing the length of the HTS tape used, the tape must sustain a high electric field during the whole fault duration. In this paper, high performance commercial 2G HTS CCs from THEVA (more than 750 A/cm-width at 77 K in self-field), on which a 500 m thick Hastelloy shunt was soldered, were tested by submitting them to faults of different amplitudes and durations. Measurements revealed that these HTS tapes could sustain any type of fault up to 100 V m−1, lasting up to 50 ms. Three-dimensions finite element simulations were able to reproduce accurately the experiments by using the appropriate temperature dependence of the critical current density and power law index, and by accounting for the variations in the local critical current along the length of the HTS tapes.



中文翻译:

使用临界电流超过750 A / cm宽度的HTS磁带成功将直流电流限制在100 Vm -1以上,持续50 ms

高压直流输电系统有望实现远距离输电。基于第二代(2G)高温超导体(HTS)涂层导体(CC)的超导故障限流器(SFCL)的使用是缓解直流输电系统中故障电流的有希望的解决方案。要制造尺寸仍可接受的SFCL,这意味着要使所用HTS胶带的长度最小化,在整个故障期间,胶带必须承受高电场。本文提供了THEVA的高性能商用2G HTS CC(自电场下在77 K时宽度超过750 A / cm),其中500焊接了m厚的Hastelloy分流器,通过使其经受不同幅度和持续时间的故障进行了测试。测量表明,这些HTS磁带可以承受高达100 V m -1的任何类型的故障,持续50 ms。三维有限元模拟能够通过使用适当的临界电流密度和功率定律指标的温度依赖性,并考虑沿HTS磁带长度方向局部临界电流的变化,来精确地再现实验。

更新日期:2021-01-14
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