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Itens para a visualização no momento 41-50 of 308
Um controlador ótimo robusto aplicado a inversores conectados à rede
(Universidade Federal de Santa Maria, 2017-06-26)
This thesis deals with a robust optimum control obtained through linear matrix inequalities
applied to inverters connected to the grid through LCL filters. First, the plant
is modeled in the state space, and the uncertainty ...
Programação inteira binária aplicada na coordenação da proteção de sistemas elétricos de potência
(Universidade Federal de Santa Maria, 2016-09-30)
This paper presents an innovative approach to coordinate typical protection devices of transmission, subtransmission and distribution systems – fuse links and functions ANSI 21, 67, 87, 50 and 51. The settings obtained by ...
Método para estimação da distância de faltas de alta impedância em redes de distribuição de energia elétrica considerando diferentes tipos de solo
(Universidade Federal de Santa Maria, 2017-06-30)
This work proposes a time-domain methodology to locate high impedance faults in overhead distribution systems. One of the innovative aspects of the method is the proposition of a single mathematical model to represent the ...
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 ...
Metodologia de projeto otimizado de conversores estáticos aplicados a sistemas fotovoltaicos
(Universidade Federal de Santa Maria, 2017-08-11)
This work proposes an optimized design methodology for static converters applied to
systems where the processed energy is discontinuous and/or variable over time. It will be
demonstrated that in these cases, it is not ...
Planejamento da expansão de sistemas elétricos de distribuição considerando a tarifação da transmissão e aspectos de confiabilidade
(Universidade Federal de Santa Maria, 2017-05-26)
The main premise for the countries that have adopted the competition model to generation and
energy market is the decentralization of activities of the generation, transmission and distribution
of energy. In this structure, ...
Avaliação reológica do período de consolidação de argamassas colantes
(Universidade Federal de Santa Maria, 2017-11-27)
This work has presented an analysis of the consolidation process of dry set mortars, using the oscillatory rheometry technique as a method of approach. The method was applied to a set of mortar mixtures, whose proportions ...
Otimização do armazenamento e geração de energia a biogás visando ao gerenciamento das redes de distribuição
(Universidade Federal de Santa Maria, 2017-08-18)
The increasing use of renewable sources of distributed generation (DG) and also the perspective
of the use of energy storage systems (ESS) in distribution systems, makes it imperative that
distributors adopt measures to ...
Monitoramento remoto e seguro do campo magnético em linhas de transmissão de alta tensão
(Universidade Federal de Santa Maria, 2017-04-17)
Magnetic and electric field levels monitoring in overhead transmission lines (TL) of power
plants and substations (SEs) has been established by Brazilian Resolution 616/2014. It was
observed in procedures to carry out ...
Metodologia para análise da estabilidade angular em sistemas de distribuição com geração distribuída
(Universidade Federal de Santa Maria, 2017-08-25)
The transient stability in distribution systems has received special interest due to the continuous increase of the distributed generation connected to the network. Besides the dynamic behavior of the generation system, ...