Simulation And Control Of Ship Nuclear Power System

With the rapid development of ship technology in recent years,all-electric propulsion ships have become the focus of research.The ship nuclear power plant system generates energy by atomic fission,and the nuclear energy density is high,thus reducing the load of the ship’s own fuel,which is conducive to improving the endurance capacity.The load of ship propulsion system accounts for a large part of the load of the whole ship power system,and when the propulsion system starts,reverses and fails,it will cause a great impact on the whole ship power system and affect the safety and reliability of nuclear power plant.Therefore,the model of the whole ship’s nuclear power system is established,and the comprehensive control strategy of the ship’s operation is studied by simulation analysis.The classification method in the calculation process of common methods is changed,the ship power load is calculated by clustering,and the ship power load under four working conditions is calculated by MATLAB programming,to overcome the calculation error caused by the classification standard in the common load calculation and the calculation error caused by the different power of the same type of load.By analyzing the mathematical model and operating characteristics of the nuclear power plant,a stable PWR power station model of ship power system is established in the PSCAD simulation software.At the same time,it is necessary to know which components of the control and protection system must be modeled or can be ignored for accurate dynamic analysis.Based on the result of load calculation of clustering,the power supply strategy of ship power grid is designed,and the power supply strategy of nuclear power plant and ship load is designed separately,and the power supply strategy of ship main power system and nuclear power station is simulated and analyzed.When the ship’s load changes little,it will return to normal reactivity by adjusting the nuclear power plant itself.However,when there is a big load fluctuation in the ship’s operation,it will have a big impact on the whole ship’s power generation system,which is not conducive to the safe and stable operation of the nuclear power plant,and the regulation ability of the nuclear power plant itself cannot meet the regulation requirements.Considering the influence of ship load change on nuclear power plant,the genetic algorithm is used to optimize the configuration of ship electric propulsion system,and the typical working conditions of ship propulsion system are simulated and analyzed.