HT-7超导托卡马克装置纵场线圈供电电源微机远程控制系统的实现

TF Power Excitation System Realize Automatic Control in HT-7 Device

HT-7超导托卡马克装置纵场电流由一台他励式直流发电机供电,纵场线圈在装置运行时处在超导态,提供稳态场。最大工作电流为5 000 A,电流稳定度需要达到0.5%。介绍了HT-7装置上纵场电源供电系统结构及存在电流稳定度低等主要问题。考虑到在不需要大经费进行电源改造同时又能兼顾满足装置实验要求,提出了如何对现有系统进行改造的方案,并实现了微机远程控制电源系统。升级后系统在实验运行中操作方便,稳定可靠,电流稳定度可达0.1%。

A DC generator supplies toroidal current in HT--7 Tokamak device. Toroidal coils in Tokamak device which supply stable field operate in superconducting state. The maximum TF current can reach 5kA and the stability degree of current cannot less than 0. 5 percent. It mainly talk about the basic struc- ture of power supply system for Toroidal coils and main problems existed in the old system such as high current fluctuation and frequent manual operation etc. Also a new improvement method is emphasized to realize automatic control in toroidal coil power supply system. Upgrade system is now applied to Toka- mak experiments and proved to be effectivity and good stability.