核反应堆保护系统优选逻辑模块

摘要

This article describes the priority logic module used in nuclear reactor protection system of CPR1000 unit. The module uses CPLD technology to realize priority judgment of control signal which come from security-level and non-security-level system, and drives the actuators and related indicator. The module＇s power supply, logic management and security level input channel use the corresponding redundancy design. The slow start-up circuit used in the power module gives the input signal of a 4 ms debounce to prevent malfunction. This module has fast response, strong anti-jamming capability, high reliability, maintainability, and reahzes the goal of the domestic production.%介绍了将优选逻辑模块应用于核电站CPR1000机组反应堆保护系统。该模块应用CPLD技术将来自安全级与非安全级系统的控制信号进行优先级判断，并驱动现场执行器及相关指示灯。本模块的供电电源、逻辑管理功能和安全级信号输入通道采用了相应的冗余设计。电源加入了缓启动电路，对输入信号进行了4ms的消抖来防止误动。本控制器具有响应速度快、抗干扰能力强、可靠性高和可维护性好等特点，实现了其国产化的目标。