Icon Of Power Software With Autocad Interface

With significant development of power construction, the scale of power system is becoming much bigger and the structure more complicated, which leads to more difficult calculation and analysis concerned with power system. And the current software was limited by past development environment, resulting in a series of problems such as unfriendly man-machine interfaces, inconvenience of data inputting and management and not-easy-grasp using method. The visual calculation and data simulation discussed here are the trends in the field of the applications in power system. Graphics system is one of important component parts of visual calculation. In the project of local power network short-circuit calculation, protection coupling and archive management, a second-exploitation of AutoCAD is used to get an expected Graphics system.AutoCAD is a general-used drawing software with opened system structure and good characteristic of further development. This paper introduces the principle, contents and common means of second-exploitation of AutoCAD. Each means is also compared with and the superiority and necessity of special designing are paid attention to. ActiveX Automation technology is fully object-oriented and most functions of AutoCAD are encapsulated in ActiveX object of AutoCAD in the form of means and property. Using ActiveX, the programmer can control AutoCAD outside or inside AutoCAD by programming. Events are notifications, or messages, that are sent out by AutoCAD to inform you about the current state of the session, or alert you that something has happened. Before you can use events of AutoCAD you must create a new class module and declare an object of type AcadApplication or AcadDocument with events. Based on the ActiveX technology, electric component menus and toolbars are created in this paper, with which a net wiring diagram for power electronics system is drawn. Take advantage of AutoCAD events, it is easy to fully carry out the consistency between graphics and data, from which users can manage databases and visual operation on graphics. The graphics about short-circuit current distribution and protection coupling are auto-drawn by using the AutoCAD entity and text objects.