UML Design of Power Automation Human Machine Interface System Based on SVG and AJAX

In order to solve main technology and application problems of human machine interface in power automation system, this paper studies scalable vector graphics and AJAX engine and designs new power automation monitor human machine interface system based on Web2.0 network architecture. Interactive cases, tele-signal process sequence, tele-metering collaborative process, tele-control interactive process of supervisory control and data acquisition system has been designed using unified modeling language and incremental iteration model, activity diagram of alarm function has been completed. At last, this paper completes architecture of this system, and achieves web remote terminal system that has been actually put into use, and resolves confusion of graphic format and real-time data inefficient of monitoring system.