Research And Implementation Of Operation Data Visualization Of Distribution Network

In recent years, with the growing scale of power grid and the development of computertechnology, visualization technology has been widely used in power grid in order to improve theefficiency of processing and analyzing the data of power grid for the power system operators.The existing methods of power grid visualization are most based on the geographical wiringdiagram or system single-line diagram. Geographical wiring diagram of distribution network is adiagram which reflects the geographic information of distribution network, usually generated by thegraphic management module of Geographic Information System (GIS) of distribution network;System single-line diagram of distribution network which describes the electrical connection oflines and equipments can be generated by Grid Production Management System (GPMS) or drawnby manual drawing tools (such as AUTOCAD, etc). This poses a problem. Because two kinds ofdiagrams are generated from different systems, their data and model might be not corresponding.This brings a lot of inconvenience to the integration monitoring and management. Therefore, it is anecessary to study an algorithm which completes the mapping from geographical wiring diagram tosingle-line diagram correctly. It can ensure the two diagrams share the same model and data.Studying how to generate the system single-line diagram according to the existing geographicalwiring diagram automatically is the basis of visualization of distribution network. Therefore, themain contents of this paper are as follows:Firstly, it introduces the research significance and research status of the automatic generationalgorithms of system single-line diagram of distribution network and information visualizationtechnology of power grid. It puts forward the research content of this topic.Secondly, it introduces some background knowledge which is the theoretical basis of furtherresearch.Then, it studies an automatic generation algorithm of distribution network based ongeographical wiring diagram ensuring that the single-line diagram and wiring diagram share thesame model and data (Integration of graphic, data and model). It provides background diagram forthe research of visualization techniques.It studies the two-dimensional visualization techniques and algorithms of operation data ofdistribution network. It achieves a visual presentation using a pie chart for line-type data. Fornode-type data, it proposes a contour method based on triangulated irregular network. Taking intoaccount that using Delaunay triangulated irregular network only may affect the accuracy of thecontour, it encrypts the initial Delaunay mesh and makes it more uniform. Therefore it increases the accuracy of contour. Because it has a problem that contour tracking is complex, it proposes a newmethod that using equivalent surface cutting trianglated irregular network. It reduces the complexityefficiently. The method has been tested in geographical wiring diagram and single-line diagramwhich are supplied by area power supply bureau and the actual result shows that the visual displayis fast and good. The graphic format is SVG which is recommended by authorities of power systemat home and abroad and it is benefit to the exchange and sharing of graphics and data in differentsystems.For the major problems of three-dimensional visualization technology of power system inpractical applications, namely the generation of real-time graphic is not fast and the choice ofgraphical display technology. An improved LOD (level of diversion) algorithm is proposed whichputs forwards that multi-level detail should be in a LOD model and would be triggered by differentconditions; It reduces the amount of data which is generated by the establishment of multi-levelLOD models and reduces the bandwidth requirements of data transmission. The display speed isincreased much. It compares the variety of common three-dimensional display techniques. It findsthat the SVG technology is not good in three-dimensional display and Java3D has a lot ofadvantages, such as the interaction is good, the network transmission speed is fast and it is easier toachieve. It chooses Java3D technology as three-dimensional display technology. The resultingthree-dimensional diagram can be rotated, zoomed in and out and the result is good.Finally, some beneficial conclusions have been drawn and some prospect and consideration inthe future have been put forward for more studying in the end.