Impact of Current Transfer to Porous Stabilizer on Recovery Performance of Resistive-Type Superconducting Fault Current Limiters Using REBCO Tapes
Impact of Current Transfer to Porous Stabilizer on Recovery Performance of Resistive-Type Superconducting Fault Current Limiters Using REBCO Tapes
复制标题
多孔稳定器的电流传输对使用 REBCO 胶带的电阻型超导故障限流器恢复性能的影响
DOI：
10.1109/tasc.2021.3131539
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发表时间：
2022
影响因子：
1.8
通讯作者：
Hashizume Hidetoshi
中科院分区：
文献类型：
--
作者：
Yuki Kohei;Ito Satoshi;Hashizume Hidetoshi
多孔稳定稀土钡铜氧化物（REBCO）带材是解决超导限流器限流与恢复性能折衷的有效结构。在本研究中，提出了一种电流转移型多孔稳定REBCO磁带，以抑制磁带上的热点，这会导致恢复延迟。在这种类型的REBCO带中，使用两种具有不同作用的多孔稳定剂。其中一个多孔稳定器用绝缘环氧树脂固定在胶带上，而电流传递到另一个多孔稳定器以降低热点处的焦耳热，从而改善沸腾传热性能。为了设计电流传输型多孔稳定REBCO带的结构，评估了多孔介质和绝缘环氧树脂的传热性能。结果表明，多孔介质和绝缘环氧树脂有合适的规格，以获得高的传热性能。电流转移型多孔稳定REBCO带的恢复性能进行了评估与原型使用选定的多孔稳定剂和绝缘环氧树脂。实验结果表明，通过电流转移到多孔稳定剂，由于抑制了热点的温升，耐受焦耳热显着提高。恢复时间缩短至0.8s。目前的研究表明，一种方法，以抑制热点与一个简单的结构，同时保持高电阻的REBCO磁带。
Porous-stabilized rare-earth barium copper oxide (REBCO) tape is an effective structure to solve a trade-off between the current-limiting and recovery performances of the resistive-type superconducting fault current limiters (RSFCLs). In the present study, a current-transfer-type porous-stabilized REBCO tape was proposed to suppress hot spots on the tape, which caused a recovery delay. In this type of REBCO tape, two porous stabilizers with different roles are utilized. The boiling heat transfer performance is improved with one of the porous stabilizers fixed with insulating epoxy on the tape while the current is transferred to the other porous stabilizer to decrease the Joule heating in the hot spot. To design the structure of the current-transfer-type porous-stabilized REBCO tape, the heat transfer performance with a porous medium and insulating epoxy was evaluated. The results indicated that there were suitable specifications for the porous medium and insulating epoxy for high heat transfer performance. The recovery performance of the current-transfer-type porous-stabilized REBCO tape was evaluated with the prototype using the selected porous stabilizer and insulating epoxy. The experimental results showed that the tolerable Joule heating was dramatically improved via current transfer to the porous stabilizer owing to the suppression of the temperature rise of the hot spot. The recovery time was shortened to 0.8 s. The present study showed one way to suppress the hot spots with a simple structure while maintaining the high electrical resistance of the REBCO tape.