HL-2M装置运行控制技术初步研究

Preliminary research of HL-2M tokamak operation and control techniques

重点介绍了HL-2M装置的运行技术和初步的等离子体控制实验结果,包括等离子体放电方案设计、线圈电流控制、击穿阶段零场匹配和等离子体电流以及位移的控制。为了降低放电运行风险,HL-2M装置初始放电采用了简化的放电方案,通过整定PID参数实现了线圈电流控制,在击穿阶段获得了10V以上的环电压和较大范围的零场区域,成功实现等离子体击穿。最后,投入了等离子体电流和水平位移反馈控制算法,成功将等离子体放电脉宽提升至200ms以上,且维持Ip≥100kA的时间超过了100ms,上述结果表明HL-2M装置运行控制技术得到了初步的检验。

This article mainly focused on HL-2 M tokamak operation and preliminary plasma control experimental results, including plasma discharge scenario design, coil current control,null field test and calculation, plasma current and position control. A simplified plasma discharge scenario was adopted to reduce the risks of first plasma operation. The coil current control was successfully implemented by setting the PID parameters. The first plasma breakdown was successfully achieved by performing a breakdown loop voltage higher than 10 V and a large area of good null field. Finally, a dedicated plasma control scheme on plasma current and radial position are designed and implemented, the plasma duration was increased to more than 200 ms,and the time to maintain Ip≥100 kA exceeds 100 ms.The above results demonstrate that HL-2 M tokamak operation and plasma control technology has been preliminarily tested by experiments.