| Power system visualization technology is based on scientific computing visualization technology. It’s used to deal with the data of the power system, make the abstract data into a graphical representation of the image, take full advantage of human perception of graphic images, and show the deep association of the grid operation status. By the human-computer interaction of the technology, the dispatcher can get the information of power network operation quickly and accurately, provide protection for power system security.Due to the high speed development of Web technology, more and more applications change to Web framework. The power system visualization applications as the guarantee of power system safe operation turn to B/S (Brower/Server) structure, which has certain positive meaning. At present, in the domestic mainstream manufacturer of power system, the most applications of visualization based on C/S (Client/Server) architecture. This structure goes against the unity of the visualization platform and later maintenance. Therefore, based on the B/S architecture for power system application research is increasing. However, the B/S structure can effectively solve the problems which the C/S structure brings. The power system visualization applications turned to Web frame have made some achievements, but mainly be realized by the plug-in technology.In order to promote the standardization of web movement development, Web Hypertext Application Technology Working Group (WHATWG) proposed HTML5specification. It provides two-dimensional and three-dimensional graphics rendering interface, supports zero plug-in Web application. In order to use the new features of the HTML5better, Web3D union put forward the WebGL technology. The technology developed by OpenGL technology, can paint and render the3D graphics in HTML5with zero plug-in. Through the study of popular Web3D technology found, the X3DOM technology has DOM format, combines with WebGL technology and X3D technology, has once writing, everywhere and every time always can render characteristic. The X3DOM technology can paint and render2D/3D graphics, be helpful to the research and implementation of Web-based power system visualization. This paper aims to find the technology which can be used for Web-based visualization, and verify the X3DOM technology whether can be used in power system visualization. According to the results of the validation, the paper designed the power equipment analyzing model, graphics configuring model, graphics painting model and so on. It provided a solution for the visualization, designed the prototype, and verified the feasibility of power system visualization applications based on Web. |