EAST新快控电源保护系统的设计

Design of new quick control power protection system of EAST

针对EAST超导托卡马克实验装置的新快控电源系统AC-DC-AC各环节工作中可能出现的问题,提出各环节的控制保护方法。通过深入研究核聚变领域快速控制电源的保护机理,并结合核聚变装置的需要,设计了抑制浪涌电流电路、电压保护电路、过电流保护电路、过温保护电路、电能泄放保护电路及撬棒保护电路,与传统的保护法相比,该方案具有保护范围广、可靠性强、安全性高的特点。实验结果表明,该电源保护系统可以确保电源在突发故障情况下安全可靠地退出,有效保护超导托卡马克实验装置内的超导磁体及电源各器件不受损坏,从而验证了设计方案的正确性和有效性。

Aiming at the problems that may arise in the work of the AC-DC-AC converter of the new fastcontrol power system of the Experimental Advanced Superconducting Tokamak(EAST),a control and protection method for each link is proposed.Based on in-depth research on the protection mechanism of fast control power in the field of nuclear fusion,and combination with the needs of nuclear fusion devices,a surge current suppression circuit,a voltage protection circuit,an overcurrent protection circuit,an overt-emperature protection circuit,an energy leakage protection circuit,and a crowbar were designed.Compared with the traditional protection method,the scheme has a wide protection range,strong reliability and high security.The experimental results show that the power protection system can ensure safe and reliable exit of the power supply in the event of a sudden failure,and effectively protect the superconducting magnets and power components of the superconducting Tokamak experimental device from damage,verifying the correctness and effectiveness of the designed scheme.