EPR核电机组反应堆保护系统数据库升级自动化研究及应用

Study and Application of Database Upgrade Automation for the Reactor Protection System of EPR Nuclear Power Plant

三代欧洲压水堆(EPR)核电机组反应堆保护系统结构复杂,在数据库全面升级过程中需保证所有功能图代码写入到对应的中央处理器(CPU)存储器中,且不能出现任何异常。即使在大修中,EPR机组对RPR系统也有诸多运行技术规范限制,导致无法同时对多个设备进行离线维修。本文通过分析EPR核电机组RPR系统的特点,提出了在数据库全面升级过程中切实可行的风险控制措施,形成了数据库升级的标准化风险控制方案,并根据RPR系统的特点编写软件,实现RPR系统数据库升级自动化,可供其他核电厂安全级分布式控制系统(DCS)数据库升级研究借鉴。

The reactor protection system(RPR)of the third-generation EPR nuclear powerplant has a complex structure.During the comprehensive upgrade of the database,it is necessary to ensure that all functional diagrams are safely and correctly upgraded to the corresponding processing unit(CPU),and that no abnormalities occur.Even in the outage,there are many restrictions on the technical operation specification of the RPR system,which makes it impossible to isolate and take the RPR system offline.By analyzing the characteristics of the RPR system of EPR nuclear power plant,this paper puts forward feasible risk control measures in the process of comprehensive database upgrade,forms a standardized risk control scheme for database upgrade,and write software according to the characteristics of the RPR system to realize the automation of RPR system database upgrade,which can be used for reference in the study of distributed control system(DCS)database upgrade of other nuclear power plants.