Study on Energy Dissipation Mechanism of HTS Tapes in the Impact and Recovery Process
Study on Energy Dissipation Mechanism of HTS Tapes in the Impact and Recovery Process
复制标题
高温超导带材冲击与恢复过程耗能机理研究
DOI：
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发表时间：
2021
影响因子：
1.8
通讯作者：
Yindun Hei
中科院分区：
文献类型：
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作者：
jianfa wu;Yaxiong Tan;Shushan Luo;Yindun Hei
高温超导带材是超导故障限流器的主要元件。高温超导带材的冲击和恢复特性直接影响直流超导限流器的限流和快速自恢复性能。这些性能将导致电力系统的稳定性和可靠性问题。很少有研究的冲击和恢复特性的观点，在高温超导带材和周围的液氮层之间的能量传播。揭示了高温超导带材在短路和恢复过程中，带材层间以及带材与外界环境之间的能量耗散机理。通过实验获得了YBa 2Cu 3 O 7-x（YBCO）带材的冲击和回复特性.分析了高温超导带材在不同冲击幅值和冲击持续时间下的失超电阻变化规律。同时，采用E-J-B-T本构方程描述高温超导带材的电磁热耦合模型。本文将撞击和回收过程分为初始阶段、冲击阶段和回收阶段。结合试验和仿真结果，得到了各相的能量耗散路径。
High temperature superconducting (HTS) tape is the main component of superconducting fault current limiters (SFCLs). The impact and recovery characteristics of HTS tape directly affect the current limiting and fast self-recovery performance of dc SFCL. These performances will lead to the problem of stability and reliability in the power system. There are rarely studies on the impact and recovery characteristics from the view of the energy spreads between the layers within the HTS tapes and the surrounding liquid nitrogen. This article reveals the energy dissipation mechanism of HTS tape among the layers of HTS tape as well as between the HTS tapes and the external environment during short-circuit and recovery process. The impact and recovery characteristics of YBa 2 Cu 3 O 7-x (YBCO) tape have been obtained by experiments. The variations of the quenching resistance of HTS tape at different impact amplitudes and durations were gained and analyzed. Meanwhile, the E-J-B-T constitutive equation is used to describe the electromagnetic thermal coupling model in the HTS tapes. The impact and recovery processes are divided into an initial phase, a shock phase, and a recovery phase by this article. The energy dissipation paths of each phase are obtained by combining experimental and simulation results.