Svg-based Visualization Technology In The Power System

With the introduction of the competition into power transactions and the increase of the interconnection between regional power systems, the power system operation and control have been more complicated than never before. The visualization technique facilitates the power technicians easily comprehending the operation data from EMS/DMS by virtue of graphs, images and pictures. However, the traditional bitmap format in these advanced applications could not be shared and reused even within the same control area. With the development of network technology, a new technique called Scalable Vector Graphics (SVG) was invented for the purpose of providing a new way to organize the graphic information so as to be easily shared and modified through the webs. The purpose of this paper is to try to apply the SVG technique to solving the existing unshareable and unusable problems of the visualization resources in power systems.Firstly, a new SVG-based power grid data description model is proposed so that the graphs in power system could be described by the plain-text based SVG format. Secondly, three visualization schemes related to geographic single-line diagram, including GIS-based diagram, voltage contour and the visualization of load flow interface, are designed on the CIM/XML/SVG platform. Finally, other visualization schemes related to simple grid connection diagram, including dynamic update of operation data and electrical component display, are designed on the CIM/XML/SVG platform as well.All the schemes above are successfully implemented on the Hangzhou Power Company's CIM/XML/SVG platform and the operation result shows that the power grid data description model proposed and the developed visualization schemes are basically effective and feasible.