LIU Hua, LI Jun-hong, WEN Jie, YANG Wu-jiao
(School of Electrical Engineering, University of South China, Hengyang 421001, China)
Abstract： Threshold decision is an important function of nuclear instrument control system based on physical parameters threshold decision. Because the conventional decision methods lack correlation with time and conditions, by analyzing the existing methods, some optimized methods are adopted. Considering safety, those methods are improved in data processing algorithms, floating threshold with multiple values, association with specific working condition, etc. These measures improve the nuclear instrument control system in fault tolerance and fault diagnosis, especially, the shutdown number of nuclear power plant decreases.
Key words： digital control system of instrument and control (DCS I&C); data processing; threshold; monitoring; decision optimization
CLD number： TP273 Document code： A
Article ID： 1674-8042(2014)04-0079-06 doi： 10.3969/j.issn.1674-8042.2014.04.015
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核电站仪控系统阈值判决及应用
刘华, 李军红, 文杰, 阳武娇
(南华大学 电气工程学院， 湖南 衡阳 421001)
摘要:基于物理参数的仪控系统阈值判决是核电站仪控系统的重要功能。 常规阈值判决固定单一， 缺乏与时间、 工况的相关性。 通过分析已有阈值判决， 提出了在安全前提下采用阈值判决优化， 在数据处理、 阈值浮动、 与工况相关联等方面作出改进， 提升了仪控系统的容错、 故障诊断能力， 降低了停堆次数。
关键词:数字化仪控系统； 数据处理； 阈值； 监测； 判决优化
引用格式：LIU Hua, LI Jun-hong, WEN Jie, et al. Threshold decision for instrument control system and its application in nuclear power plant. Journal of Measurement Science and Instrumentation, 2014, 5(4): 79-82. [doi: 10.3969/j.issn.1674-8042.2014.04.015]
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