Modular Modelling of Nonlinear Complex Systems

A new modular approach to the modelling of nonlinear complex systems is introduced in this paper. The approach draws on the graphical capabilities of the combined Simulink© and Matlab© software packages. In this approach, a complex system is decomposed into self-contained modules with well defined sets of inputs and outputs, so as to facilitate the easy linking of individual models. A power system comprising a synchronous machine, an exciter, and a network of buses, lines and loads is used as example to demonstrate the modelling approach. Simulation results of the system at certain specified operating conditions are presented.