| The metro construction in our country is in a large-scale development stage,the computer simulation of metro power supply system has a certain application,but the design and development of graphical modeling software in such simulation are not effectively used,this method can improve the efficiency of the use of power supply simulation software in the metro design and running.In this thesis,through the analysis of the structure of metro power supply system,joint with the actual power supply system of Shenzhen metro,this thesis designs and realizes the full graphics metro power supply simulation software.Through the discussion about the simulation software implementation scheme with the metro power supply design professionals,clear that the current metro construction requires a good visualization and interactive power calculation software,to reduce the cost of learning and improve the efficiency of the using of related power supply calculation method.The structure of medium voltage network is analyzed in detail,through the investigation of Shenzhen metro power supply system network structure.through on-site tests to obtain data,laying the foundation for the simulation analysis,comparison and verification.The overall of the software designed by C#language,designing a kind of graphical model design method by using WYSIWYG technology for the DC power supply network and the AC power supply network,according to the design of the graphical interface,design a layered branch flow calculation method for the middle-voltage network,joint the calculation method of AC power supply with the graphics interface,this software gets the visual simulation calculation results.In order to make the calculation of DC power supply and AC power supply calculation independent simulation calculation and also realized AC/DC simulation calculation,the software use the modular design method.A unified interface is designed for traction calculation software and AC/DC power supply simulation calculation.The interface design is based on object oriented design method.In this thiesis,users can get more operating rightsa.inorder to improve the usability of software,an unified file storage method is designed for the software,and the results of calculation and output are designed according to the needs of users.The normal operation and fault operation model of Shenzhen Metro middle voltage power supply network is built and simulated,illustrates the usefulness of the software;for one kind test condition,the result of AC/DC joint simulation and test data obtained were analyzed to verify the accuracy of the software platform.Finally,the design of the joint simulation software platform of the subway network is completed,the software has windows style,and can be operated at independent environment,it has the independent data storage and read functions,and it's easy to learn to operate.The software has been applied in engineering at present. |
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