Design of ReBaCuO-coated conductors for FCL
Design of ReBaCuO-coated conductors for FCL
复制标题
FCL用ReBaCuO涂层导体的设计
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Nhat Tung Nguyen
中科院分区：
文献类型：
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作者：
P. Tixador;Nhat Tung Nguyen
超导（SC）故障限流器（FCL）提高电网的安全性和电能质量；这是当今的两个基本要求。该设备必须满足正常和故障操作的多项要求，并且必须在各种条件下运行。低预期电流故障代表最严重的情况。 ReBaCuO 涂层导体的正确设计对于安全和优化操作至关重要。超导导体的设计主要基于热标准。超导导体的最小体积由其焓和通过 SC 导体的有限电流给出。超导量在设计中只发挥很小的作用。高电阻率导体减少了 ReBaCuO 的体积。在需要考虑的其他因素中，淬火均匀性是电阻 FCL 最重要的因素之一。涂层导体结构和设计有助于减少沿导体失超不均匀性的后果。所提出的论点，即高限制电流迫使导体均匀淬火，以及适度导体电阻率以减少温差，得到了在各种限制条件下使用两种相当不同的涂层导体进行的实验的支持。
The superconducting (SC) fault current limiter (FCL) improves the security and the power quality of electric networks; these are the two essential demands of today. The device must fulfil several requirements in normal and fault operations, and must operate under a variety of conditions. Low prospective current faults represent the most severe conditions. Proper design of the ReBaCuO-coated conductor is essential for safe and optimized operations. The design of the superconducting conductor is mainly based on thermal criteria. The minimum superconducting conductor volume is given by its enthalpy and the limited current through the SC conductor. The superconducting quantities play only a small role in the design. A high resistivity conductor reduces the ReBaCuO volume. Of other considerations to be taken into account, the quench homogeneity is one of the most important for resistive FCLs. The coated conductor architecture and design can help to reduce the consequences of quench inhomogeneity along the conductor. The presented arguments, for a high limited current forcing the conductor to quench uniformly and for a moderate conductor resistivity to reduce the temperature differences, are supported by experiments carried out utilizing two rather different coated conductors in various limiting conditions.