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Quench/Thermal Runaway Detection and Protection Technique for Conduction-cooled HTS Conductors

传导冷却高温超导导体的淬火/热失控检测与保护技术

基本信息

批准号：
16360138
负责人：
HAYAKAWA Naoki
金额：
$ 8.32万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360138/
关键词：
Superconductivity Energy storage SMES Conduction-cooling Critical current Normal zone propagation Quench Thermal runaway

项目摘要

Superconducting Magnetic Energy Storage (SMES) is expected to play a significant role in a highly reliable electric power supply system. For size and cost reduction, conduction-cooled SMES system with Bi2212 HTS wire has been investigated. For the reliable operation of conduction-cooled HTS SMES, thermal runaway characteristics of Bi2212 coil should be evaluated and understood.From the viewpoint mentioned above, this research project investigated thermal runaway characteristics of conduction-cooled Bi2212 HTS coil with 4K-GM cryocooler system. We measured temperature and voltage distribution of the HTS solenoidal coil for typical current patterns of load fluctuation compensation and so on at different ambient temperatures from 5K to 20K. The voltage in the innermost layer of solenoidal coil increased rapidly under the current pattern and the HTS coil reached thermal runaway. Then, we carried out thermal analysis including heat generation, conduction and transfer under conduction-cooling condition. We reproduced the experimental results by thermal analysis, and evaluated the thermal runaway characteristics. The critical current for thermal runaway increased with the temperature decrease and saturated at the temperature lower than 10K. Furthermore, we found key parameters for evaluation of thermal runaway characteristics of conduction-cooled HTS coils, and suggested a criterion for the diagnosis of HTS SMES system.

超导磁储能（SMES）有望在高可靠性的电力供应系统中发挥重要作用。为了减小尺寸和降低成本，研究了采用Bi2212高温超导导线的传导冷却SMES系统。为了使传导冷却的HTS SMES可靠运行，需要对Bi2212线圈的热失控特性进行评估和了解。从上述角度出发，本课题研究了采用4K-GM制冷机系统的传导冷却Bi2212高温超导盘管的热失控特性。在5K ~ 20K的不同环境温度下，测量了负载波动补偿等典型电流模式下高温超导螺线管线圈的温度和电压分布。在电流模式下，电磁线圈最内层电压迅速升高，高温超导线圈达到热失控。然后，我们进行了热分析，包括在导冷条件下的产热、传导和传递。通过热分析再现了实验结果，并对热失控特性进行了评价。热失控临界电流随温度的降低而增大，在温度低于10K时达到饱和。在此基础上，找到了评价传导冷却高温超导线圈热失控特性的关键参数，提出了高温超导中小企业系统热失控的诊断标准。

项目成果

期刊论文数量（33）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Electrical and Thermal Characteristics of Cryocooler Conduction-cooled HTS Coil

制冷机传导冷却高温超导线圈的电气和热特性

DOI：
发表时间：
2005
期刊：
Annual Conference on Power & Energy Society, IEE of Japan
影响因子：
0
作者：
S.Noguchi;et al.
通讯作者：
et al.

Temperature Dependence of Critical Current at 4.2K-55K of Conduction-cooled Bi2212/Ag Wires

传导冷却 Bi2212/Ag 线在 4.2K-55K 时临界电流的温度依赖性

DOI：
发表时间：
2005
期刊：
IEEE Trans. on Applied Superconductivity 15・2
影响因子：
0
作者：
T.Uemura;K.Sekine;K.Matsuda;M.Yamamoto;ポリマーがいし材料表面の放電特性評価と劣化現象調査専門委員会;H.Kojima
通讯作者：
H.Kojima

伝導冷却SMES用Bi2212/Ag超電導線材の臨界電流特性

传导冷却SMES用Bi2212/Ag超导线的临界电流特性