The Smart Grid concept introduces an updated architecture and new elements to the traditional power grid. As a result, existing survivability schemes that have been designed with a centralized architecture in mind are either inefficient or no longer applicable. In this paper, we review several solutions that have been suggested in the literature in order to ensure the proper operation of the po...

This thesis is intended to be a succinct and rather informal presentation of some of my most recent work, which has been done in collaboration with several other people. In particular this thesis concentrates on our contributions to the study of incomplete information in the context of data interoperability. In this scenario data is heterogenous and decentralized, needs to be integrated from se...

This document presents a novel methodology to optimize the power system frequency response based on implementation of decentralized controllers. The proposed method focuses control internal rotor angle in selected generator, which allows its governor act as controller that requires input local measurements. Through optimization process, it is first possible establish set optimal parameters for ...

The restoration process of the bulk-power transmission system following a partial or a total blackout, have two main issues during a restoration, those are voltage control and frequency control. Special attention is therefore given to the behaviour of network parameters, control equipments as they affect the voltage and frequency regulation during the restoration process. During restoration due...

Inverters in microgrids (MGs) face significant challenges during their parallel operations, such as accurate power sharing, deviations system voltage magnitude and frequency, imbalance between generation load demand. To solve these technoeconomic challenges, hierarchical control structures are implemented MGs. The structure consists of three layers primary, secondary, tertiary controls. approac...

In DELPHI Volume IV, Chapter 3 (1993) it was argued that by making assumptions about the propagation behavior of a synthesized (plane) wave through a weathered layer it is possible to consider the weathered layer effects at the source and receiver side separately. The fast weathered layer distortion to the (plane) wave front at the source side is largely restored during propagation through the ...

Next generation of smart grids face a number of challenges including co-generation from intermittent renewable power sources, a shift away from monolithic control due to increased market deregulation, and robust operation in the face of disasters. Such heterogeneous nature and high operational readiness requirement of smart grids necessitates decentralized control for critical tasks such as pow...