摘要
针对核电厂工艺系统繁多、I/O点数量大且类型多的情况,设计了一套针对核电厂的I/O点分配方法。首先根据核电厂I/O点的安全等级、列、机组号等属性对I/O点进行了初步的划分;然后通过分析核电厂的工艺,将各个系统的I/O点划分到不同的功能分区;最后,充分考虑设备之间的冗余、方便回路控制和后期维护等情况,将I/O点分配到卡件。以福清核电厂一号机组的反应堆冷却剂系统等3个系统为例,利用该方法进行I/O分配不仅提高了系统可靠性和可扩展性,而且后期维护量小。
In accordance with the conditions of numerous technological process systems and huge amount of I/O points in nuclear power plant, the method of I/O assigmnent suitable for nuclear power plant is designed. Firstly, based on the properties of the I/O points, e. g., safety level, train and unit number, the I/O points are preliminary classified; then, the I/O points of each system are sorted into different functional section; finally, considering the redundancy among equipment, easement of loop control and post-maintenance, etc. , the I/O points are assigned to modules. With three of the systems including reactor coolant system, etc. , in Fuqiug NPP Unit 1 as example, the method proposed has been used for I/O assignment, the reliability and expandability of the system are enhanced and a small amount of post-maintenance is needed.
出处
《自动化仪表》
CAS
北大核心
2014年第2期50-52,57,共4页
Process Automation Instrumentation
关键词
核电厂
DCS
I/O分配
功能分区
冗余
隔离
Nuclear power plant DCS I/O assignment Functional section Redundant Isolation
