介绍了EAST(全超导托卡马克核聚变实验装置)中性束注入高压电源的综合保护方案。从主回路保护、电源模块保护和现场安全监测三个方面介绍了其基本原理, 详细阐述了现场安全监测器的硬件与软件实现方法, 并利用LabVIEW实现了上位机监控软件的开发。该系统对于频繁打火、安全风险很高的EAST-NBI高压电源提供了有效的安全保障, 对于EAST实验中人员和设备的安全具有重要意义。

This paper introduces the integrated protection system of EAST neutron beam injection (NBI) high voltage power supply. From three aspects of protection (main circuit’s protection, power modules’ protection and site safety monitoring), it presents the basic principle of the system, describes the hardware and software of site safety monitors, and realizes the design of PC monitoring software using LabVIEW. The system provides effective security for the EAST-NBI high voltage power supply, which produces spark frequently and has a high security risk, and it is of great significance to the safety of personnel and equipment in EAST experiment.