Analysis of FCL effect caused by superconducting DC cables for railway systems

26th International Cryogenic Engineering Conference & International Cryogenic Materials Conference 2016

材料科学;物理学

Nishihara, Taichi^1 ; Hoshino, Tsutomu^1 ; Tomita, Masaru^2

Electrical Engineering, Graduate School of Science and Engineering, Meisei University, 2-1-1 Hodokubo, Hino-shi, Tokyo

191-8506, Japan^1

Applied Superconductivity, Materials Technology Division, Railway Technical Research Institute, 2-8-38 Hikari-cho, Kokubunji-shi, Tokyo

185-8540, Japan^2

关键词: Cable temperatures;    Direct current system;    Over current;    Railway system;    Short-circuit accident;    Simulation model;    Temperature rise;    Unsteady state;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/171/1/012122/pdf
DOI  :  10.1088/1757-899X/171/1/012122

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

DC superconducting cable that is expected for railway system has been developed in the world, since the introduction effects were expected to energy saving. However, behaviour under unsteady states such as a short circuit accident are not entirely clear, and appropriate method of protection has not been established. Therefore, simulation model of the superconducting cable under direct current system was built and analyzed. Analysis result suggests the superconducting cable has the effect of Fault Current Limited (FCL) and critical current rise was effective method for temperature-rise suppression under unsteady states. Trade-off between cable temperature rise and overcurrent was confirmed.