反应堆冷却剂系统故障分析与智能诊断专家系统的研究

发布时间：2018-07-29 11:37

【摘要】：本文以百万千瓦级核电机组一回路作为分析的工程对象,对反应堆冷却剂系统进行结构与功能分析,分别对各个子系统的功能单元和功能部件进行分析,把各系统内各部件和零件按照功能结构联系起来,对一回路的监测参数进行分析,指出了各设备监测参数的离散化规则指标。在结构与功能分析的基础上,本文继续分析了一回路中各主体部件可能发生的功能故障、故障征兆、故障影响以及处理措施,运用FMEA方法进行了系统的、整体的分析,并创新性的引入了HMM理论模型,通过遗传算法对监测参数估计的方法实现对系统的状态的评估与判断。接着本文使用了故障树分析方法,建立故障树对故障原因进行查找,后对一回路中的典型故障模式进行了案例式分析,给出了故障原因查找、故障影响、处理措施并形成了诊断报告。在前面的基础上,本文完成了对反应堆冷却剂故障诊断系统整体的思路设计,运用专家系统为载体,实现了全文理论研究的整体融合,并通过实例分析完整地演示了智能诊断专家系统的运行。
[Abstract]:In this paper, the structure and function of the reactor coolant system are analyzed by taking the primary circuit of the million-kilowatt nuclear power unit as the engineering object, and the functional units and functional components of each subsystem are analyzed respectively. According to the functional structure, the monitoring parameters of the primary circuit are analyzed, and the discretization rule index of the monitoring parameters of each equipment is pointed out. On the basis of structure and function analysis, this paper continues to analyze the possible functional faults, fault symptoms, fault effects and treatment measures of the main components in the primary circuit, and makes a systematic and overall analysis by using the FMEA method. The HMM theory model is introduced creatively, and the system state is evaluated and judged by genetic algorithm (GA) to estimate the monitoring parameters. Then, this paper uses the fault tree analysis method, establishes the fault tree to find the fault cause, then carries on the case analysis to the typical fault mode in the primary circuit, gives the fault reason finding, the fault influence, Treatment measures were taken and a diagnostic report was formed. On the basis of the above, the whole train of thought of the reactor coolant fault diagnosis system is designed in this paper. The expert system is used as the carrier to realize the whole fusion of the full text theory research. The operation of the intelligent diagnosis expert system is demonstrated by an example.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM623.2

【参考文献】