Network models enlighten harmonics investigations [of power systems]

With the increasing use of controlled power electronic devices, the computer-aided estimation of future harmonic loads is playing an increasingly important role in the planning of power network expansion projects and in the connection of new loads. A suitable means of representing network elements and complete network components across the entire frequency range under investigation is required for the various circuit configurations. This is necessary in order to conduct investigations of this nature and to achieve realistic results within a reasonable time period. Here, the authors describes the use of computer systems in such power system modelling applications.