Research And Realization Of United Simulation To Marine Power Distribution System& Load

Marine electrical power system has gradually occupied the core position with the trend that modern marine aimed at the technology of large-scale,all-electrical propulsion.With the appropriate simulation software and the experimental platform,a modelis established to simulate the marine power system.Then by combining with the control,hydraulic,high-pressure air and other subsystems,a united model which integrate the whole marine systemsis established to achieve the united simulation ofmulti-disciplines.It is helpful for the performance-prediction,power requirement analysis and device parameter matching of each subsystem on the marine during its design phase.Based on the analysis to the function and the principle of each system,the thesis combined the power system with the control,hydraulic,high-pressure air,air condition and other 14 subsystems,to develop a united simulation software based on user operation.The quasi-dynamic running process of each subsystem during themarineworkcan be obtainedthrough the simulation software.The goal of multi-disciplines united simulation with the characteristics of fast and quasi-dynamic is achieved.Through the software,a practical tool is offered to function analysis,validate and modify for designer during the design phase of the marine.The dissertation accomplishes the following work:1.With the analysis to the various modules of marine power system,a parametric mathematical modelis establishedto simulate the power system.The united model combined the ship with the propelleris proposed through an in-depth research of the electric propulsion and the propeller load.2.Base on the analysis to the ship air condition,hydraulic,lighting,ventilation systems,its mathematical model is established to achieve the logic simulation for each single system.Through the certain interface design,the various system of the ship are integrated for a united model which involved multi-disciplines.3.The ship united simulation software are developed by Microsoft Visual Studio 2012,The software framework of simulation platform is built by C#,the management of database is implemented by SQL,and the approximate function is programed by C language.The thesishas completed the design and construction of the ship united simulation software.The simulation platform has the characteristics of fast,accurate,quasi-dynamic and excellent user interaction.4.Based on the united simulation software,a simulation case,which represents a typical operation of the ship,is adopted to verify rationality and feasibility of the united simulation platform.