考虑自诊断的反应堆保护系统停堆功能可靠度评估模型研究 |
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引用本文: | 王明洋,张蔚,徐冬苓,程玉玉,郑明光. 考虑自诊断的反应堆保护系统停堆功能可靠度评估模型研究[J]. 核动力工程, 2023, 44(2): 159-165. DOI: 10.13832/j.jnpe.2023.02.0159 |
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作者姓名: | 王明洋 张蔚 徐冬苓 程玉玉 郑明光 |
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作者单位: | 上海核工程研究设计院有限公司,上海,200233 |
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摘 要: | “在线自诊断”作为数字化仪控系统的重要特征,对核电厂反应堆保护系统(RPS)停堆功能的可靠性分析具有重要作用。通过分析自诊断对人因、定期试验等因素的影响,建立设备级误动模型;以典型RPS TX为例,通过马尔科夫方法建立动态的TX序列级和系统级模块误动模型;利用系统级模块误动模型定量计算TX停堆功能可靠度与自诊断的关系。通过定性分析与定量计算论证了综合考虑自诊断对RPS停堆功能可靠性分析的必要性,为后续国内RPS停堆功能的可靠性评价提供了借鉴。
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关 键 词: | 反应堆保护系统(RPS) 自诊断 系统可靠度 误动作 可靠度模型 马尔科夫方法 失效率 |
收稿时间: | 2022-04-12 |
Study on Reliability Evaluation Model for the Reactor Protection System Shutdown Function Considering Self-diagnostics |
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Affiliation: | Shanghai Nuclear Engineering Research & Design Institute Co., Ltd., Shanghai, 200233, China |
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Abstract: | As an important feature of digital instrument control system, online self-diagnostics plays an important role in the reliability analysis of shutdown function of reactor protection system (RPS) in nuclear power plant. By analyzing the influence of self-diagnostics on human factors and periodic testing, the component-level spurious actuation model was established. Taking a typical RPS TX as an example, the dynamic TX sequence-level and system-level module spurious actuation models are established by Markov method. The relationship between TX shutdown function reliability and self-diagnostics is quantitatively calculated by using the system-level module spurious actuation model. Through qualitative analysis and quantitative calculation, the necessity of comprehensive consideration of self-diagnostics in RPS shutdown function reliability analysis is demonstrated, which provides a reference for the subsequent reliability evaluation of RPS shutdown function in China. |
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