核电站主给水系统建模仿真及故障诊断
发布时间：2018-10-16 09:42
【摘要】：核电站主给水系统是一个重要的、复杂的,存在多种能量耦合的系统。同时因其跨越核岛和常规岛,主给水系统的正常运行对整个核电站的运行有着至关重要的作用,故对该系统进行建模仿真、故障诊断的研究,对提高整个核电站的设计和运行管理水平有着重要的意义。论文依托国内某先进核电站的主给水系统,通过创建主给水系统的伪键合图模型,对系统的热力学性质及流体能量性质进行了详细的分析,同时将实际模型与MATLAB软件仿真模型进行全面对比,验证模型的正确性和有效性。系统模型的仿真及仿真结果的分析,为评估验证自身设计、优化设计参数、以及进行故障仿真等工作提供指导和帮助。在完成系统数学模型以及对系统运行工况分析的基础上,利用Petri网理论,针对某先进第三代核电主给水系统故障信号,建立系统工况模型及故障模型,以完成系统基态故障诊断和系统动态故障诊断,为核电站系统的动态特性描述及系统的故障诊断提供了一种新的方法。同时论文还进一步的分析了影响主给水系统故障率的因素,提出了一种通过提升开关量仪表可靠性来体降低系统故障率的手段。
[Abstract]:The main water supply system of nuclear power station is an important and complex system with multiple energy coupling. At the same time, because it crosses the nuclear island and conventional island, the normal operation of the main feed water system is very important to the operation of the whole nuclear power plant, so the modeling and simulation of the system and the study of fault diagnosis are carried out. It is of great significance to improve the design and operation management level of the whole nuclear power plant. Based on the main water supply system of a domestic advanced nuclear power plant, the thermodynamic properties and fluid energy properties of the system are analyzed in detail by creating the pseudo-bond graph model of the main feed water system. At the same time, the actual model is compared with the MATLAB software simulation model to verify the correctness and validity of the model. The simulation of the system model and the analysis of the simulation results provide guidance and help for the evaluation and verification of the design, optimization of design parameters, and fault simulation. Based on the completion of the system mathematical model and the analysis of the operating conditions of the system, based on the theory of Petri net, the system working condition model and the fault model are established according to the fault signals of the advanced third generation nuclear power supply system. In order to complete system ground state fault diagnosis and system dynamic fault diagnosis, a new method is provided for dynamic characteristic description and system fault diagnosis of nuclear power plant system. At the same time, the paper further analyzes the factors that affect the failure rate of the main feed water system, and puts forward a method to reduce the system failure rate by raising the reliability of the switch meter.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM623
本文编号：2273956
[Abstract]:The main water supply system of nuclear power station is an important and complex system with multiple energy coupling. At the same time, because it crosses the nuclear island and conventional island, the normal operation of the main feed water system is very important to the operation of the whole nuclear power plant, so the modeling and simulation of the system and the study of fault diagnosis are carried out. It is of great significance to improve the design and operation management level of the whole nuclear power plant. Based on the main water supply system of a domestic advanced nuclear power plant, the thermodynamic properties and fluid energy properties of the system are analyzed in detail by creating the pseudo-bond graph model of the main feed water system. At the same time, the actual model is compared with the MATLAB software simulation model to verify the correctness and validity of the model. The simulation of the system model and the analysis of the simulation results provide guidance and help for the evaluation and verification of the design, optimization of design parameters, and fault simulation. Based on the completion of the system mathematical model and the analysis of the operating conditions of the system, based on the theory of Petri net, the system working condition model and the fault model are established according to the fault signals of the advanced third generation nuclear power supply system. In order to complete system ground state fault diagnosis and system dynamic fault diagnosis, a new method is provided for dynamic characteristic description and system fault diagnosis of nuclear power plant system. At the same time, the paper further analyzes the factors that affect the failure rate of the main feed water system, and puts forward a method to reduce the system failure rate by raising the reliability of the switch meter.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM623
【参考文献】
相关期刊论文 前3条
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3 韩晓娟;杨锡运;刘东明;徐大平;柳亦兵;;基于键合图理论的故障诊断方法及在锅炉给水泵上的应用[J];中国电机工程学报;2007年23期
，本文编号：2273956
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