Research and Experiment on Quench Detection Technology of HTS Current Leads Based on Distributed Optical Fibers

doi:10.1080/15361055.2019.1690927

HFCAS OpenIR

	Research and Experiment on Quench Detection Technology of HTS Current Leads Based on Distributed Optical Fibers
	Chen, Bin 1,2; Li, Jiangang1 ; Hu, Yanlan1 ; Wang, Teng 1,2; Zhou, Chao1
	2020-02-17
发表期刊	FUSION SCIENCE AND TECHNOLOGY
ISSN	1536-1055
通讯作者	Hu, Yanlan(yanlanghun@ipp.ac.cn)
摘要	High-temperature superconductor (HTS) current leads are important components of the EAST and CFETR tokamaks, which are responsible for operating the high parametric current. HTS current leads are made of Bi-2223/Ag-Au alloy tapes, which have the characteristics of slow quench propagation speed and weak quench signal. Traditional thermometers are easily damaged by the high voltage from the current leads, and the terminal voltage signal cannot reflect the hot spot changes of current leads in real time. In this paper, a novel quench detection method based on optical frequency domain reflection technology is proposed. Temperature variations of HTS can be obtained in real time by demodulating the Rayleigh scattered spectrum from the distributed optical fiber attached to the surface of HTS stacks. This paper describes a quenching experiment for one pair of 1-kA small current leads. The external thermal disturbance is increased to explore the quench propagation of HTS current leads under the condition of a self-field, 77 to 80 K air and conduction combined cooling method. From the experimental results, the temperature distribution map of the whole HTS lead is obtained. Compared with the quench voltage, the spectral shift of the fiber appeared to be about 2 s ahead, and the hot spot position can be located with 1-cm accuracy.
关键词	High-temperature superconductor current leads quench detection optical frequency domain reflection distributed optical fiber
DOI	10.1080/15361055.2019.1690927
关键词[WOS]	TAPE
收录类别	SCI
语种	英语
WOS研究方向	Nuclear Science & Technology
WOS类目	Nuclear Science & Technology
WOS记录号	WOS:000519307400003
出版者	TAYLOR & FRANCIS INC
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103752
专题	中国科学院合肥物质科学研究院
通讯作者	Hu, Yanlan
作者单位	1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China
第一作者单位	中科院等离子体物理研究所
通讯作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Chen, Bin,Li, Jiangang,Hu, Yanlan,et al. Research and Experiment on Quench Detection Technology of HTS Current Leads Based on Distributed Optical Fibers[J]. FUSION SCIENCE AND TECHNOLOGY,2020,76.
APA	Chen, Bin,Li, Jiangang,Hu, Yanlan,Wang, Teng,&Zhou, Chao.(2020).Research and Experiment on Quench Detection Technology of HTS Current Leads Based on Distributed Optical Fibers.FUSION SCIENCE AND TECHNOLOGY,76.
MLA	Chen, Bin,et al."Research and Experiment on Quench Detection Technology of HTS Current Leads Based on Distributed Optical Fibers".FUSION SCIENCE AND TECHNOLOGY 76(2020).