The Research And Implementation Of Integration Of Graphic Data And Model In Power System Based On SVG

In order to improve the integration of different power automation systems, the open and standardized technology is the basis and key way. An open and standardized system is designed and constructed with the Common Information Model (CIM) specification of the IEC61970 standard and Scalable Vector Graphics (SVG) which was recommended as the graphics standard by W3C. Because SVG has XML features, text features, interactive features and non-polar scale, SVG can describe not only the graphic shapes of the model classes in CIM, but also can store information such as attributes and parameters. SVG primitives and databases are designed based on CIM specification. Model classes in CIM specification will be mapping with SVG, and properties of the classes will be mapping with properties in SVG primitives, and the relationship between classes will be changed to the relationship between SVG primitives. Attributes in classes will be mapping to field in tables, and the relationship between classes will be changed to relationship between tables. Batik toolkit and Java components are used to create and operate SVG. Because inheritance, aggregation and association relationship in CIM are hard to realize in relational database, this paper uses the Hibernate framework to realize the mapping of CIM model and relational database, and the mapping configuration file of the Hibernate framework identifies the relationship between classes, and the Hibernate framework will manage it automatically. The Ajax technology and JDOM are used to get data from database, and real-time refresh the SVG graphics. While drawing primitives, the device tables will be created. While drawing the power system graphics, primitives of device will insert into tables. Then the graphics will be automatic topology, and create connectivity table and storage connectivity. This will realize the integration of graphic, data and model. The system of integration of graphic, database and model was effectively achieved by SVG, XML and CIM. The result of the research demonstrates that the system has practical significance to system integration, application integration and interoperability.