Current dependence of heat leak on the terminals in the superconducting DC transmission and distribution system of CASER-2
Current dependence of heat leak on the terminals in the superconducting DC transmission and distribution system of CASER-2
复制标题
CASER-2超导直流输配电系统终端漏热电流依赖性
DOI：
10.1088/1742-6596/400/5/052009
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Masahiro Minowa
中科院分区：
文献类型：
--
作者：
Toshio Kawahara;Hirofumi Watanabe;Masahiko Emoto;Makoto Hamabe;Satarou Yamaguchi;Yasuo Hikichi;Masahiro Minowa
超导作为一种节能技术，可以解决世界范围内的能源问题。特别是超导直流电输配电系统，因为它可以很容易地扩展到大规模的能量传输系统中以实现能量共享，因此具有广阔的应用前景。我们正在开发用于超导T&D系统有效冷却的低温系统。在中央大学200m级超导直流输配电系统（CASER-2）的冷却实验中，对系统的性能进行了估计。例如，我们的超导电缆在端子处使用Peltier电流引线（pcl）连接到外部。PCL由热电材料和铜铅组成。热电模块的导热系数小，热功率大，可以有效地将热泄漏隔离到低温端。我们测量了沿电流引线的温度和端子处的热泄漏。由于电流引线具有最佳形状因子，因此存在最佳工作电流。讨论了系统性能的电流依赖性。
Superconductivity can solve the energy problems in the world as energy saving technologies. In particular, superconducting direct current (DC) transmission and distribution (T&D) systems is promising, as it can be easily extended to large scale energy transmission systems for energy sharing. We are developing criogenic systems for effective cooling of superconducting T&D systems. In the cooling experiments with the 200 m-class superconducting DC T&D system at Chubu University (CASER-2), we have estimated the performance of the system. For example, our superconducting cable is connected to the outside at the terminals using Peltier current leads (PCLs). The PCL is composed of a thermoelectric material and a copper lead. Small thermal conductivity and large thermopower of the thermoelectric modules can effectively insulate the heat leak to the low temperature end. We measured the temperature along the current leads and the heat leak at the terminals. As current leads have an optimal shape factor, the optimum operation current exists. The current dependence of the system performance is discussed.