A Module Oriented EMTP Interface

A new user interface has been developed for the EMTP (the ElectroMagnetic Transients Program developed at the Bonneville Power Administration). This interface uses the concept of "modules" to allow the interactive graphic assembly of complex simulations in an organized, user-friendly manner. These modules are defined formally, with each consisting of a "visible part" and an "internal part." The visible part describes the function the module performs and the terminal points that enable it to be connected to other modules. The internal part describes how the module is constructed. Two types of module internal parts are distinguished: atomic and composite. Atomic modules are mapped directly into EMTP card images. Composite modules consist of interconnectioons of other modules.