核电站系统图形化建模仿真及验证

发布时间：2018-04-11 23:25

本文选题：核电 + 图形化建模　；参考：《东南大学》2015年硕士论文

【摘要】：近年来环境问题日益突出,核电作为一种清洁能源,发展核电在优化能源结构及改善环境方面有着十分重要的意义。核电伴随着其安全性的改善已经发展到第三代,我国引进第三代核电AP1000技术,并自主研发CAP1400技术。计算机技术的快速发展使得仿真在工程领域的应用日益增多,通过仿真软件的验证与确认,减少了工程的研发成本并提高了工程的安全性。通过仿真软件对核电站系统进行建模仿真,提高电站的安全运行系数。图形化建模是当前建模仿真行业的发展趋势,针对核电站本文开发了一套图形化建模仿真软件虚拟电站。本文在分析国内外核电仿真软件的基础上,采用图形化和模块化的理念开发核电站建模仿真软件。使用Visio作为图形引擎,利用Visio Automation技术作为依托开发图形化建模平台虚拟电站。设备数学模型采用模块化建模,使用ActiveX技术进行设备模块封装,具有良好的独立性和可扩展性。虚拟电站采用建立流体网络的方式进行热力系统建模,软件能够自动进行系统组态图的网络拓扑结构分析并建立相应的流体网络模型,虚拟电站将流体网络与设备模块相结合,对热力系统组态图建立数学模型,实现热力系统的实时仿真。针对仪控系统,虚拟电站能够实时运行控制逻辑组态图。同时,虚拟电站平台中使用MySQL作为数据库,利用数据库将热力模型与仪控系统相结合,实现了系统建模仿真。本文对我国自主化第三代核电技术CAP1400的核岛、常规岛内主要热力系统和仪控系统进行分析研究,并着重分析了主给水系统及反应堆冷却剂系统的工艺流程、设备配置和控制逻辑。本文采用机理推导和经验归纳相结合的方式,建立了加热器、泵、阀门、除氧器、反应堆、蒸汽发生器等设备的数学模型,并制作了模具库。使用虚拟电站进行了设备模块测试验证,结果表明模型设计正确,动态趋势合理,验证了模型的正确性。对主给水系统及反应堆冷却剂系统进行系统建模仿真,运行虚拟电站做调试实验,对主给水系统及反应堆冷却剂系统进行了系统验证。结果表明虚拟电站建立系统模型正确、功能实用,具有一定的工程应用价值。
[Abstract]:In recent years, environmental problems have become increasingly prominent, nuclear power as a clean energy, the development of nuclear power in the optimization of energy structure and improve the environment has a very important significance.Nuclear power has been developed to the third generation with the improvement of its safety. China has introduced the third generation nuclear power AP1000 technology and independently developed CAP1400 technology.With the rapid development of computer technology, the application of simulation in engineering field is increasing day by day. Through the verification and confirmation of simulation software, the cost of engineering research and development is reduced and the safety of engineering is improved.The simulation software is used to model and simulate the nuclear power plant system to improve the safe operation coefficient of the power station.Graphical modeling is the development trend of modeling and simulation industry at present. A set of graphical modeling and simulation software virtual power station is developed in this paper.Based on the analysis of nuclear power simulation software at home and abroad, the modeling and simulation software of nuclear power plant is developed by using graphical and modular concept.Visio is used as graphics engine and Visio Automation technology is used to develop virtual power station based on graphical modeling platform.The mathematical model of equipment is modeled by modularization and encapsulated by ActiveX technology. It has good independence and expansibility.The virtual power station uses the method of establishing fluid network to model the thermodynamic system. The software can automatically analyze the network topology of the system configuration diagram and establish the corresponding fluid network model. The virtual power station combines the fluid network with the equipment module.The mathematical model of configuration diagram of thermal system is established, and the real-time simulation of thermal system is realized.For the instrument control system, the virtual power station can run the control logic configuration diagram in real time.At the same time, MySQL is used as the database in the virtual power station platform, and the thermal model is combined with the instrument control system to realize the system modeling and simulation.In this paper, the nuclear island of CAP1400, the main thermodynamic system and the instrument control system in the CAP1400 are analyzed and studied, and the technological process of the main feed water system and reactor coolant system are emphatically analyzed.Device configuration and control logic.In this paper, the mathematical models of heater, pump, valve, deaerator, reactor and steam generator are established by combining mechanism derivation and experience induction, and the mould library is made.The virtual power station is used to test and verify the equipment module. The results show that the model design is correct, the dynamic trend is reasonable, and the correctness of the model is verified.System modeling and simulation of main feed water system and reactor coolant system are carried out, debugging experiments of running virtual power station are carried out, and system verification of main feed water system and reactor coolant system is carried out.The results show that the system model of virtual power station is correct, the function is practical, and it has certain engineering application value.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM623

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