Electrical network dynamic models with application to modal analysis of harmonics

•Novel methodology for improving harmonic behavior.•Presentation of two efficient network modeling approaches for harmonic analysis.•Application examples illustrating didactically results on the proposed methodology.•Presentation of the computational performance for a large-scale power system model.

This paper describes two network models which allow several harmonic and electromagnetic transient analysis, being, therefore, more flexible than conventional ones. In general, these models can be used to perform time simulation, frequency scan and modal analyses. The system matrices are assembled for an industrial system example. Harmonic problems are proposed and solved using a non-conventional analysis with the described models. Results on a large-scale power system regarding computational performance are also included.