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Current limiting characteristics of a resistance-inductance type superconducting fault current limiter
Physica C: Superconductivity and its Applications ( IF 1.3 ) Pub Date : 2022-07-16 , DOI: 10.1016/j.physc.2022.1354105
Jing Zhang , Shaotao Dai , Tao Ma , Yan Li , Darui He

The superconducting fault current limiter (SFCL) can effectively and quickly limit the fault current, which is appropriate for the voltage source converter high voltage direct current (VSC-HVDC) transmission system to reduce the fault current. A new resistance-inductance type SFCL using the structure of the inductive superconducting coils is presented. The current limiting and inter-turn insulation characteristics of resistance-inductance type SFCL are studied. A simulation model is developed for the comparison of inductive and non-inductive type superconducting coils. The simulation results show that the inductive superconducting coils can significantly reduce the fault current rise rate by more than 42% over the non-inductive superconducting coils. The voltage distribution of the inter-turn channels is calculated by the presented method.Utilizing the voltage distribution, the electric field distribution can be obtained, which is important for the insulation design. Some inductive type pancake superconducting coils were fabricated, and the DC impulse current tests were carried out. The testing results and simulated results have a good agreement, which shows that the inductive type SFCL can effectively limit the fault current.



中文翻译:

阻感型超导故障限流器的限流特性

超导故障电流限制器(SFCL)能有效、快速地限制故障电流,适用于电压源换流器高压直流(VSC-HVDC)输电系统降低故障电流。提出了一种利用感应超导线圈结构的新型电阻-电感型SFCL。研究了阻感型SFCL的限流和匝间绝缘特性。开发了一个仿真模型,用于比较感应式和非感应式超导线圈。仿真结果表明,有感超导线圈比无感超导线圈可以显着降低故障电流上升率42%以上。通过所提出的方法计算匝间通道的电压分布。利用电压分布,可以获得电场分布,这对于绝缘设计很重要。制作了一些电感式煎饼超导线圈,并进行了直流冲击电流试验。测试结果与仿真结果吻合较好,说明电感式SFCL能有效限制故障电流。

更新日期:2022-07-16
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