Originally, ancillary services (ASs) were provided by large-scale power plants to ensure the
secure and reliable operation of power systems. However, with the advent of renewable …

Abstract System identification is becoming a relevant research area for numerous
applications in power grids due to the increasing complexity of the system. A paradigm shift …

The replacement of conventional synchronous generators with converter-interfaced
renewable energy sources (RESs) reduces the overall inertia levels of modern power …

To monitor network operation in real-time, power system operators have developed wide-
area monitoring systems (WAMS). However, the centralized communication and information …

The proliferation of grid-connected converter interfaced energy sources in Smart Grids,
enhance sustainability and efficiency as well as minimizing power losses and costs …

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 …

When it comes to estimating dynamics (modes) of interconnected power systems through
transient (ringdown) data, one can expect more realistic estimates for the compound system …

Mode identification from post-disturbance ringdown responses is a valuable tool for the
analysis of the dynamic performance and the stability margins of power systems. In this …

Abstract The Vector Fitting (VF) technique has become a mature rational approximation tool.
This paper proposes two enhancements that increase the VF computational efficiency …

In modern power systems is recommended to study the overall system with detailed
understanding of the large-scale generation, the wider transmission network, the distributed …