This paper presents a qualitative overview of the main developments carried out by the
Brazilian Electrical Energy Research Center and the Brazilian Power System Operator to …

This paper describes two network models which allow several harmonic and
electromagnetic transient analysis, being, therefore, more flexible than conventional ones. In …

The potential instability issues caused by the dynamic interactions between parallel grid-
forming inverters are examined. The approach adopted for analysis is s-domain admittance …

With the increasing utilization of power electronic equipment in power systems, there has
been an increase in the occurrence of oscillatory behavior from unknown sources in recent …

This paper describes the use of modal analysis in electromagnetic transient studies of ac
networks having long transmission lines. Modal analysis provides structural information on …

This paper describes the use of modal analysis of s-domain network models in the solution
of harmonic distortion problems of industrial systems. Modal analysis involves the …

This paper describes an s-domain sequence model for three winding transformers to be
used in modal analysis of ac networks. The model takes into account off-nominal tap …

This paper describes a detailed s-domain model for long transmission lines to be used in the
modal analysis of ac networks. Structural information on the system may be obtained with …

Dois tipos de modelagens propícias para a realização da análise modal de redes elétricas
são apresentados neste trabalho: sistemas descritores (SD) e matriz Y (s). Os modelos …

The HarmZs program has been developed for the analysis of harmonic problems in power
systems. This program makes use of modal analysis that provides additional dynamic …