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Estimação fasorial para relés de proteção numéricos usando redes neurais artificiais e o algoritmo de Levenberg-Marquardt
(Universidade Federal de Santa Maria, 2018-03-16)
In this work, two methodologies for phasor estimation in numerical protective relays in
Electrical Power Systems will be presented: one based on Artificial Neural Networks, and another
based on the Levenberg-Marquardt ...
Método para detecção de oscilação de potência no domínio do tempo
(Universidade Federal de Santa Maria, 2018-03-09)
This work proposes two techniques for the detection of power swings and blocking of distance
relays on transmission lines to prevent undue shutdowns. If a fault occurs during power swing,
it must be immediately detected ...
Aumento da eficiência total de armazenadores de energia compostos por eletrolisadores, células a combustível e hidretos metálicos
(Universidade Federal de Santa Maria, 2018-03-26)
The growing global energy consumption, the search for reduction in carbon emissions and
climate problems highlight the importance of investment in low environmental impact energy
systems. In this sense, the Generation ...
Determinação de arranjos regulatórios e econômicos para viabilizar investimentos em sistemas de armazenamento de energia em redes de distribuição de energia elétrica
(Universidade Federal de Santa Maria, 2018-12-17)
In this work, it is presented a methodology for analyzing the insertion of energy
storage systems in electric energy distribution networks. This methodology consists
of modeling the current regulatory policy with its ...
Inversores fotovoltaicos trifásicos não isolados conectados à rede com técnicas para redução da corrente de fuga
(Universidade Federal de Santa Maria, 2018-12-18)
This doctoral dissertation presents contributions related to transformerless grid-connected
three-phase photovoltaic systems, focusing on the leakage current reduction. Among the
leakage current reduction techniques, the ...
Projeto e implementação de uma lâmpada led bulbo em conformidade com aspectos elétricos, térmicos e ópticos exigidos pelas normativas brasileiras
(Universidade Federal de Santa Maria, 2018-08-31)
This work presents an LED bulb lamp conception aiming to replace traditional lighting technologies such as incandescent and compact fluorescent lamps. The LED lamp manufacture and sale requirements based on INMETRO Ordinance ...
Projeção da difusão de sistemas fotovoltaicos em consumidores residenciais de baixa tensão
(Universidade Federal de Santa Maria, 2018-03-19)
Aiming at maximizing the potential growth of Distributed Generation for the
residential market, the National Agency of Electrical Energy published the normative
resolutions that establishes the general terms for connection ...
Localização de falta de alta impedância em sistemas de distribuição: uma abordagem no domínio da frequência e estimação de parâmetros através do MMQP
(Universidade Federal de Santa Maria, 2018-04-23)
High impedance fault location still represents a challenge for protection engineers of electric
power utilities. Such a challenge remains a very critical point and of great concern to
utilities, as this type of fault can ...
Metodologia de blocos funcionais com previsão de grandezas elétricas para sistemas de distribuição inteligentes
(Universidade Federal de Santa Maria, 2018-03-22)
Distribution systems are undergoing structural and topological changes, mainly due to the influence of the new distributed energy resources inserted along the feeders. In this context, the growth of the Smart Grids requires ...
Estratégia de controle Volt/VAr Coordenado para sistemas de distribuição inteligentes
(Universidade Federal de Santa Maria, 2018-03-26)
This work presents contributions to the study and development of Voltage and
Reactive Power Control (Volt/VAr control or VVC) for intelligent distribution systems.
Currently, the use of VVC is considered one of the most ...