Research on Multi-Functional Magnetic Shield Type Superconducting Fault Current Limiter
多功能磁屏蔽式超导故障限流器的研究
基本信息
- 批准号:11450106
- 负责人:
- 金额:$ 5.63万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B).
- 财政年份:1999
- 资助国家:日本
- 起止时间:1999 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The magnetic shield type superconducting fault current limiter is thought to be one of the promising candidates for practical application. The Bi2223 or Bi2212 material will be used in general as its magnetic shielding body. A large quantity of the materials have to be used for the shielding body because those materials show such low Jc as 1,000〜1,500 A/cm^2. Accordingly, it is not easy to increase the temperature of the material quickly by joule heat only over its critical temperature during a fault. And the temperature will decrease slowly below the critical temperature after a fault. These are problems for practical application. in this project, a highperformance magnetic shield type fault current limiter has been proposed. it will be fast activated automatically in case of a fault. And it will be recovered to superconducting state in a short period of time after a fault.Various tyoes of fault current limiters(FCL)have been studied. Almost all designs adopt liquid cryogen cooling. Although the short-circuit failure will seldom occur, just once or twice a year at most. we must always provide liquid cryogen and it will be costly and troublesome. So, a conduction-cooling FCL cooled by a refrigerator will be desirable from a view point of reduction of maintenance for cooling. The theoretical and experimental studies on the stability, the current limiting characteristics etc.in the conduction-cooling FCL are conducted in this project.With relation to the multi-functional fault current limiter, the generation and control of inductive reactance are experimentally conducted by controlling actively the flux flow resistivity of the shielding body . A superconducting fault current limiter with the static var compensator is proposed.
磁屏蔽型超导限流器是一种具有实际应用前景的限流器。通常使用Bi 2223或Bi 2212材料作为其磁屏蔽体。大量的材料必须用于屏蔽体,因为这些材料显示出1,000 A/cm^2的低Jc。因此,在故障期间仅通过焦耳热使材料的温度快速升高到其临界温度以上是不容易的。故障发生后,温度将缓慢下降到临界温度以下。这些都是实际应用的问题。本文提出了一种高性能磁屏蔽型故障限流器。一旦发生故障,它将自动快速启动。故障电流限制器(FCL)是一种新型的故障电流限制器,故障电流限制器可以在短时间内恢复到超导状态。几乎所有的设计都采用液体制冷剂冷却。虽然短路故障很少发生,一年最多只有一两次。我们必须始终提供液体冷冻剂,这将是昂贵和麻烦的。因此,从减少用于冷却的维护的观点来看,由制冷机冷却的传导冷却FCL将是期望的。本课题对传导冷却型故障限流器的稳定性、限流特性进行了理论和实验研究,并结合多功能故障限流器,通过主动控制屏蔽体的磁通流电阻率,对感抗的产生和控制进行了实验研究。提出了一种带静止无功补偿器的超导故障限流器。
项目成果
期刊论文数量(20)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
大西利只: "A proposal of fast Self-acting and recovering magnetic shield type superconducting fault current limiter and the analyses of their characteristics"Cryogenics. (印刷中). (2001)
Toshita Onishi:“快速自恢复磁屏蔽型超导故障限流器的建议及其特性分析”(出版中)。
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- 影响因子:0
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- 通讯作者:
Onishi, T.Sasaki, K.and Akimoto, R.: "A proposal of fast Self-acting and recovering magnetic shield type superconducting fault current limiter and the analyses of their characteristics"Cryogenics. (in Press). (2001)
Onishi,T.Sasaki,K.和Akimoto,R.:“快速自恢复磁屏蔽型超导故障限流器的提议及其特性分析”Cryogenics。
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Sasaki, K.Yamagata, A.Nii, A.Onishi, T and Shibuya, M.: "Thermal Design and Performance Tests of a Current Limiter with a Conduction Cooled Nb_3Sn Screen"IEEE Transactions on Applied Superconductivity. (in Press). (2001)
Sasaki, K.Yamagata, A.Nii, A.Onishi, T 和 Shibuya, M.:“带有传导冷却 Nb_3Sn 屏的限流器的热设计和性能测试”IEEE 应用超导汇刊。
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大西利只: "Stability of a Shorted Nb_3Sn Coil Cooled by a Refrigerator for a Magnetic Shield Type Fault Current Limiter"IEEE Transactions on Applied Superconductivity. 10・1. 845-848 (2000)
Toshitada Onishi:“用于磁屏蔽型故障限流器的短路 Nb_3Sn 线圈冷却的稳定性”IEEE 应用超导学报 10・1 (2000)。
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- 影响因子:0
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- 通讯作者:
大西利只: "Stability of a Shorted Nb_3Sn Coil Cooled by a Refrigerator for a Magnetic Shield Type Fault Current Limiter"IEEE Transactions on Applied Superconductivity. 10. 845-848 (2000)
Toshitada Onishi:“用于磁屏蔽型故障限流器的由冰箱冷却的短路 Nb_3Sn 线圈的稳定性”IEEE 应用超导汇刊 10. 845-848 (2000)。
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ONISHI Toshitada其他文献
ONISHI Toshitada的其他文献
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{{ truncateString('ONISHI Toshitada', 18)}}的其他基金
Improvement of Current Limiting Device Consisting of Thin Film Superconductor with Thermal and Magnetic Effect
热磁效应薄膜超导体限流装置的改进
- 批准号:
15360142 - 财政年份:2003
- 资助金额:
$ 5.63万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Research on Advanced Superconducting Fault Current Limiter with Both Quick Current Limiting Function and Superconducting Recovery Characteristics
兼具快速限流功能和超导恢复特性的先进超导故障限流器研究
- 批准号:
13450108 - 财政年份:2001
- 资助金额:
$ 5.63万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on High Temperature Superconducting Power Device Due to Dynamic Control of Magnetic Shield Functions
磁屏蔽功能动态控制的高温超导功率器件研究
- 批准号:
07455115 - 财政年份:1995
- 资助金额:
$ 5.63万 - 项目类别:
Grant-in-Aid for Scientific Research (B)