南方能源建设2024，Vol.11Issue(3)：65-74,10.DOI:10.16516/j.ceec.2024.3.07
托卡马克超导磁体失超电压探测技术
Quench Voltage Detection for Superconducting Magnets in Tokamak
摘要
Abstract
[Introduction]The superconducting tokamak serves as the foundation for steady-state operation.Timely and reliable quench detection is the key to ensuring the secure operation of superconducting magnets,which has the highest level of safety in fusion device operation.[Method]In this paper,an overview of the principles and implementation approaches of quench voltage detection for fusion magnets was provided.It briefly summarized the research progress of quench detection and the quench detection schemes adopted by mainstream tokamak devices and introduced the basic principles and processes of quench voltage detection.Taking the experimental advanced superconducting tokamak(EAST)as an example,this paper analyzed the interference sources and coupling mechanisms of quench voltage detection,proposed a two-stage decoupling compensation scheme,and established an optimization analysis model for primary compensation and a dynamic compensation mechanism for plasma-coupling interferences.[Result]The experimental results indicate that the compensation scheme can achieve a high noise suppression ratio greater than 99.9%,which can effectively improve the signal-to-noise ratio(SNR)and reliability of quench detection.[Conclusion]The established optimization analysis model for primary compensation and the dynamic compensation mechanism for plasma-coupling interferences can be extended to other tokamak devices,thereby providing necessary accumulation for the design of quench detection and the secure operation of magnets in future fusion reactors.关键词
托卡马克/超导磁体/失超探测/电磁干扰抑制/EASTKey words
tokamak/superconducting magnets/quench detection/electromagnetic interference suppression/EAST分类
核科学引用本文复制引用
王腾..托卡马克超导磁体失超电压探测技术[J].南方能源建设,2024,11(3):65-74,10.基金项目
国家自然科学基金资助项目"EAST全超导托卡马克中等离子体对失超探测信号的干扰机理及抑制策略研究"(12105321) （12105321）
中国科学院合肥物质科学研究院等离子体物理研究所资助项目"脉冲强磁场下的超导磁体失超特性及诊断技术研究"(DSJJ-2022-01) （DSJJ-2022-01）
