摘要
核电厂多样性驱动系统(DAS)是当保护系统发生共因失效时,用于抵御核电厂发生的设计基准事件的系统,对DAS进行可靠性分析至关重要。针对马尔可夫方法的组合爆炸问题,本文提出了一种等效模块化的分析方法,能够将DAS的隐马尔可夫模型分解成若干的部分,并对这些复杂度相对低的部分进行定量分析,根据计算的结果将每个部分再等效为一个设备或模块,最后整合所有部分等效的设备来组成一个等效系统,构建该等效系统的马尔可夫模型,以替代原系统的马尔可夫模型进行定量分析。然后用于对核电厂DAS系统平台进行了定量计算,并采用动态可靠性框图法(DRBD)对结果进行验证,结果显示了其有效性。
Reliability analysis of the diverse actuation system(DAS)in nuclear power plants is essential to protect the system against the consequences of a design baseline event in the event of a common cause failure of the nuclear power plant.Aiming at the combined explosion problem of Markovs method,this paper proposes an equivalent modular analysis method.The proposed method can decompose the Markov model of DAS into several parts and quantitatively analyze these relatively low complexity parts.Based on the calculation results,each part is equivalent to a device or module,and finally,all equivalent devices are integrated to form an equivalent system.A Markov model of the equivalent system is constructed to replace the original Markov model for quantitative analysis.Finally,the proposed method was used to quantitatively calculate the DAS system platform of nuclear power plants,and the results were verified by using the dynamic reliability block diagram(DRBD)method.The results demonstrate the effectiveness of the proposed method.
作者
夏林路
谷颖
XIA Linlu;GU Ying(China Nuclear Control System Engineering Co.,Ltd.,Beijing 102401,China)
出处
《核电子学与探测技术》
CAS
北大核心
2024年第4期744-753,共10页
Nuclear Electronics & Detection Technology
关键词
马尔可夫
多样性驱动系统(DAS)
模块化
可靠性框图
markov
diverse actuation system(DAS)
equivalent modularization
reliability block diagram
