Method of vector plotting based on modularization in power supply and distribution system CAD software

This paper presented a method of vector plotting based on modularization in CAD software for the electric power supply and distribution system, which is developed with the language of Visual Basic 6.0. Through analyzing and researching on the related problems of software development with the object-oriented programming method, the modularization technology and the characteristic of the power supply and distribution system, the vector plotting function was designed with the modularization method and was divided into such three modules as the common class module, the basic-plotting class module and electrical-element class module. The users can conveniently call the class modules to plot. The plotted graphic can zoom without deformation and the graphic documentation can be saved and modified. Finally, a simple graph of the distribution system was drawn with this software.