Suitable For Ac And Dc Systems Research And Development Of The Ems Graphical Data Integration

The graph and data maintenance of EMS is the very important part of EMS. However the traditional datasheet-oriented maintenance mode has a lot of disadvantages, such as high complexity, low reliability, low portability, low extensibility and low interoperability. Though Some EMS offer data maintenance through the graph mode, they apply the function-oriented method, which brings low universalness. These modes do not think the DC aspect. Based on a graph-model-database integration maintenance mode, with object-oriented technology, a maintenance system applied in the AC and DC system is developed in this thesis. This new mode maintains the entity objects in the power system directly, which helps it to match the hiberarchy of the power system. It makes the data structure clear, and reduces the complexity of maintenance and the redundancy of data. Based on this mode, the graph and the network model are closely integrated. The device modeling and topology formation are completed during the ploting of the wiring diagram. The device states and dynamic data are dynamically displayed on the wiring diagram. This helps the corresponding and synchronization between the graph and the data. The interoperability can be resolved if CIM is imported into this mode. In this thesis the design of the framework and functions of the graph-model-database integration system are described. The realization of Picture Editor, Picture Brower and Primitive Editor using Java is also described. The data structure of some core classes and some important flow charts are introduced. At last, all functions of the system are tested.