Advanced Nuclear Power Plant Simulation Research

After the completion of the first land-based model the reactor ,marine nuclear power reactors developed rapidly stimulated by the military’s huge demand, and advantages of the nuclear power plant being nuclear-powered ship Device as a major driving force for promoting ships makes it continuing to be today’s hot research field. To ensure the safety of nuclear power plant operation, the economy is also a higher demand. Simulation is playing an increasingly important role in the research of nuclear power plant. It can provide aided design tools for nuclear power plant operation, thermal-hydraulic studies, accident analysis and research tools for control system validation and optimization programs, which effectively shorten the development cycle of the nuclear power plant, reduce development costs and risks.On the basis of the nuclear power plant simulation platform technology developed by the team the subject related to, this article developed a marine two-reactor nuclear power plant simulation platform, and do related simulation research. The simulation platform is composed of the thermal-hydraulic system, control and protection systems, human-computer interface, database sharing and the back-control procedures. This article is a study of the advanced marine two-reactor nuclear power plant, which focuses on thermal-hydraulic system and control system modeling and verification. The thermal modeling system includes two reactors’complete nuclear and conventional islands model, and the control and protection systems includes the main control system such as the power control system, pressurizer control system, steam generator control system and so on. On the basis of establish a complete thermal-hydraulic systems and related control and protection system model , verify related the transient and steady-state of thermal-hydraulic systems, including simulation and verification of full power steady, step load changes, accident condition and special two-reactor operation condition. Steady-state results consist with the value of the basic design. The transient and special two-reactor operation condition calculation results consist with the design trends. After the verification of thermal-hydraulic systems, integrate the control and protection system model, human-machine interface procedures and shared databases, and then establish an advanced nuclear power plant simulation platform. Verify the steady-state and an independent dual-reactor operation mode step load reduce transient, the transient and steady-state results are in line with design trends in the design, and the simulation is proved correct. In this paper, research results show that the advanced nuclear power plant simulation platform can simulate the target rightly. It could provide research tools for advanced nuclear power plant operation, thermal-hydraulic studies, accident analysis and control and protection system verification.