Design of Real-Time Control System for Nuclear Fusion High-Power DC Test Platform

doi:10.12096/j.2096-4528.pgt.24169

Abstract

Abstract:

Objectives In order to support the testing requirements of the international thermonuclear experimental reactor AC/DC converter system and apply to high-precision control standards for future fusion magnet power supplies, a real-time control system suitable for high-power DC test platforms was developed. Methods Choosing the QNX real-time operating system as the core platform and combining it with reflective memory technology provided by GE company in the United States, a network architecture for real-time high-speed data exchange was built. The system was designed with multiple operation modes to cope with different testing scenarios, while implementing different levels of safety interlocking mechanisms to ensure equipment safety. This system possessed the capabilities of setting converter operating parameters, fault identification, equipment status monitoring, and millisecond-level real-time control and safety protection functions. Results Experimental validation has demonstrated the system’s stability and reliability in high-power environments, achieving precise control of 120 kA steady-state current and 500 kA pulse current. Furthermore, the system not only meets the basic requirements of real-time control but also ensures safe interlocking and continuous stable operation of the equipment during multi-mode operation. Conclusions The designed real-time control system for the high-power DC test platform achieves efficient multi-module synchronous management and fully complies with strict millisecond-level control cycle requirements.

Key words: international thermonuclear experimental reactor, nuclear fusion, fusion magnet power supplies, real-time control, reflective memory, converter, interlock protection

CLC Number:

TK 01

Shiying HE, Liansheng HUANG, Xiaojiao CHEN, Xiuqing ZHANG, Zejing WANG, Ying ZUO, Xinan ZHANG. Design of Real-Time Control System for Nuclear Fusion High-Power DC Test Platform[J]. Power Generation Technology, 2024, 45(6): 1023-1029.

Figures/Tables 9

References 15

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联锁级别	描述	动作
Ⅰ级	PLC检测熔断器信号，任何熔断器损坏都会触发保护	整流器逆变
	PLC检测水冷却系统，缺水或水温过高将触发保护	整流器逆变
	PLC检测母排，母排温度过高将触发保护	整流器逆变
	检测安全钥匙状态，安全钥匙拔出将触发保护	整流器逆变
	电流传感器信号异常，将触发保护	整流器逆变
	主回路或桥电流过流，将触发保护	整流器逆变
	66 kV掉电	禁止启动
Ⅱ级	如果主回路电流或桥接电流触发硬件过流保护，联锁PLC快速触发保护信号并断开高压	断开高压
Ⅱ级	当监控人员在现场检测到危险情况时，紧急按钮信号将被激活，该信号将触发来联锁PLC，以快速断开高压	断开高压

联锁级别	描述	动作
Ⅰ级	PLC检测熔断器信号，任何熔断器损坏都会触发保护	整流器逆变
	PLC检测水冷却系统，缺水或水温过高将触发保护	整流器逆变
	PLC检测母排，母排温度过高将触发保护	整流器逆变
	检测安全钥匙状态，安全钥匙拔出将触发保护	整流器逆变
	电流传感器信号异常，将触发保护	整流器逆变
	主回路或桥电流过流，将触发保护	整流器逆变
	66 kV掉电	禁止启动
Ⅱ级	如果主回路电流或桥接电流触发硬件过流保护，联锁PLC快速触发保护信号并断开高压	断开高压
Ⅱ级	当监控人员在现场检测到危险情况时，紧急按钮信号将被激活，该信号将触发来联锁PLC，以快速断开高压	断开高压

运行模式	整流器模块	参数
单桥运行	CU1/CU2/CU3/CU4	30 kA/0.5 kV
两桥并联	CU1&CU2/CU3&CU4	60 kA/0.5 kV
四桥并联	CU1&CU2&CU3&CU4	120 kA/0.5 kV
两桥串联	CU1&CU2/CU3&CU4	30 kA/1.0 kV
四桥串联	CU1&CU2&CU3&CU4	30 kA/2.0 kV

运行模式	整流器模块	参数
单桥运行	CU1/CU2/CU3/CU4	30 kA/0.5 kV
两桥并联	CU1&CU2/CU3&CU4	60 kA/0.5 kV
四桥并联	CU1&CU2&CU3&CU4	120 kA/0.5 kV
两桥串联	CU1&CU2/CU3&CU4	30 kA/1.0 kV
四桥串联	CU1&CU2&CU3&CU4	30 kA/2.0 kV

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