EAST装置失超诊断系统基于DSP技术二次电压补偿设备研制  

The second voltage compensation instrumentation design based on DSP modules for quench detection system on EAST

作　　者：陈斌[1,2] 胡燕兰[1] 魏永清[3] 郑龙贵[1] 肖业振 吕环宇[1] 王腾[1,2] 陆建华[1] Chen Bin Hu Yanlan Wei Yongqing Zheng Longgui Xiao Yezhen Lv Huanyu Wang Teng Lu Jianhua(Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China Universityof Science and Technology of China, Hefei 230026, China Instrument Science and Optical- Electronics Engineering Division, Hefei University of Technology, Hefei 230009, China)

机构地区：[1]中国科学院等离子体物理研究所,合肥230031 [2]中国科学技术大学,合肥230026 [3]合肥工业大学仪器科学与光电工程学院,合肥230009

出　　处：《低温与超导》2017年第4期34-38,共5页Cryogenics and Superconductivity

摘　　要：EAST是全超导托卡马克聚变装置,其极向场和纵场线圈全部采用超导磁体。一旦发生失超,失超保护系统用于确保超导磁体和引线的安全运行。诊断超导线圈电阻电压变化是最直观也是最快捷的技术解决途径,主要难点在于研制高精度的噪声抑制补偿设备,用于抑制实验过程中在诊断信号上产生的大量感应噪声。原先采用模拟电路设计的二次补偿设备存在技术缺陷;而基于DSP技术二次电压补偿设备软硬件结合,大大提高设备精度,通过上位机可以方便实现关键参数与算法更新,经过两年时间,达到初步设计指标,并在近期EAST实验中成功实现并行试运行,下一步升级改造正在进行中。文中主要介绍了数字式二次补偿系统设计思路、补偿原理、以及初步实验测试结果。EAST is a full superconducting Tokamak,which the Poloidal fields and Toloidal fields coils are all the superconducting magnets. The purpose of the Quench Detection System is to detect quenches in superconducting elements in order to protect them. Quench detection by voltage measurements is likely to be the fastest available technical solution, but specific signal processing is required to discriminate the resistive voltage from the inductive one due to the variations of the magnetic field. The Secondary Voltage Compensation Instrumentation is one of the most important functions of the Electronic Quench Detection Device which shall effectively reduce the inductive voltage signal from the measured voltage to a certain level. This system relied on the application of digital signal processing technique was superior to the analog technology originally. The primary advantage of this system was its flexibility. It was implemented using mostly commercially available components which were completely integrated into EAST quench detection system. Recent experimental results showed that the performance of this digital system can meet the technical requirements.

关 键 词：EAST 全超导磁体 失超检测 数字式 二次补偿系统 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]