Comparison of Estimated Conductor Costs between a Superconducting Thin-film Fault-current Limiter (FCL) and a Coated-conductor-based Superconducting FCL

H. Yamasaki, K. Arai, M. Furuse, Y. Nakagawa, K. Kaiho, T. Kumagai, M. Shibuya, T. Nitta
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引用次数: 6

Abstract

We recently proposed a new design for a high-temperature superconducting thin-film fault-current limiter (FCL), which uses high-resistivity Au-Ag alloy shunt layers instead of the pure gold (or silver) shunt layers conventionally used. Due to the much larger resistance of the Au-Ag alloy layers, the FCL elements withstood very high electric fields (> 40 Vpeak/cm), and realized a very high switching power density, ∼2.0 kVA/cm2. The composition of our FCL element is very simple, and the achieved power density is more than five times higher than conventional devices, which leads to a dramatic reduction in the amount of expensive superconducting thin films required. Similarly, Kinder et al. recently proposed a new coated-conductor-based FCL element, which achieved a relatively high electric field of 2.7 Vpeak/cm. We estimated the cost of our thin-film FCL elements used in a typical 6.6 kV FCL that is introduced in a distributed power supply site. We also estimated the cost of coated conductors used to produce the FCL, and compared the two.
超导薄膜型故障电流限制器(FCL)与涂层型超导故障电流限制器(FCL)导体成本估算比较
我们最近提出了一种高温超导薄膜故障电流限制器(FCL)的新设计,它使用高电阻率的金银合金分流层代替传统使用的纯金(或银)分流层。由于Au-Ag合金层的电阻大得多,FCL元件可以承受非常高的电场(bbb40 Vpeak/cm),并实现非常高的开关功率密度,约2.0 kVA/cm2。我们的FCL元件的组成非常简单,实现的功率密度比传统器件高五倍以上,这导致所需的昂贵超导薄膜的数量急剧减少。同样,Kinder等人最近提出了一种新的基于涂层导体的FCL元件,该元件实现了2.7 Vpeak/cm的相对较高的电场。我们估计了在分布式供电站点中引入的典型6.6 kV整箱箱中使用的薄膜整箱元件的成本。我们还估计了用于生产FCL的涂层导体的成本,并对两者进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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