Distributed Operating Systems
Mostrando 1-12 de 37 artigos, teses e dissertações.
-
1. Computational algorithm for stability analysis of distribution networks with distributed generation
Abstract With the insertion of distributed generation in distribution networks, security analysis becomes crucial, in islanded operation or when the system is connected to the grid. Dynamic stability analyses are necessary in order to achieve minimum levels of security and reliability. Such analyses are obtained through the solution of the algebraic-differen
Braz. arch. biol. technol.. Publicado em: 25/11/2019
-
2. Reconfiguração e Alocação Ótima de Geração Distribuída em Sistemas de Energia Elétrica / OPTIMAL RECONFIGURATION AND DISTRIBUTED GENERATION ALLOCATION IN ELECTRIC POWER SYSTEMS
This work presents a methodology for optimal reconfiguration and optimal distributed generation allocation aiming to minimize technical energy losses in electric power distribution systems. The proposed methodology includes two step by step heuristic algorithms, based on sensitivity indexes, one for the reconfiguration and the other for the distributed gener
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/09/2011
-
3. Comparative analysis of voltage regulation strategies in power distribution systems with distributed generators / Análise comparativa de estratégias para regulação de tensão em sistemas de distribuição de energia elétrica na presença de geradores distribuídos
In order to assure that the installation of distributed generation would improve the operation of distribution and subtransmission networks, its technical impacts should be carefully studied, especially in distribution networks, which were originally designed to operate with unidirectional power flow. Among these impacts, the influence of distributed generat
Publicado em: 2010
-
4. Proposta de melhoria de tempo de resposta para o protocolo FTT-CAN : estudo de caso em aplicação automotiva
Embedded computing systems have become widely used in many areas. The greater part of those systems has time constraints and therefore they can be characterized as real time embedded systems. Nowadays, distributed computing has reached the embedded application, where some fieldbuses are already being used as communication platforms. Some important researches
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
-
5. Projeto do núcleo de um sistema operacional distribuído / Project of the kernel of a distributed operating system
Uma das tendências para o aumento do desempenho dos sistemas de computação atuais tem sido a distribuição do processamento em uma rede de computadores. Já foram pesquisados diversos modelos para obter essa distribuição, e um dos que tem se mostrado mais promissor é aquele no qual o controle da distribuição é efetuado diretamente pelo sistema oper
Publicado em: 2010
-
6. O sistema operacional de rede heterogêneo HetNOS / The HetNOS heterogeneous network operating system
O advento dos computadores pessoais e posteriormente das estações de trabalho, somado ao desenvolvimento de hardware de comunicação eficiente e de baixo custo, levou a popularização das redes locais. Entretanto, o software não presenciou o mesmo desenvolvimento do hardware, especialmente devido a complexidade dos sistemas distribuídos. A heterogeneid
Publicado em: 2010
-
7. Trix : um sistema operacional multiprocessado para transputers, com gerencia distribuida de processos / Trix, a transputer based multiprocessor operating system, with distributed process management
O trabalho em torno do sistema TRIX visa desenvolver um sistema operacional multiprocessado experimental, para servir de base a futuros trabalhos de pesquisa em sistemas operacionais e processamento paralelo. Como características essenciais do sistema tem-se simplicidade, desempenho e compatibilidade com UNIX. Com o sistema operando em vários processadores
Publicado em: 2010
-
8. Metodo baseado em logica nebulosa para alocação de geradores distribuidos sob a optica do perfil de tensão / Method based on fuzzy logic for allocating distributed generators from the viewpoint of the voltage profile
This work consists in proposing a methodology based on Fuzzy Logic to obtain an index, which classifies the buses more suitable to install a distributed generator in an electric power distribution system. Themethodologywas developed taking into consideration the difficulty tomaintain a suitable voltage profile in distribution systems, so the methodology resu
Publicado em: 2009
-
9. Serviços ancilares através da geração distribuíba : reserva de potência ativa e suporte de reativos / Ancillary services provide by distributed generation : active power reserves and reactive support
In order to set the principles for a future regulatory framework in Brazil which involves the participation of distributed generation (DG) to provide ancillary services; this work presents an analysis developed in three broad areas, technical, economic and regulatory. A specific objective of the project is to make an analysis of the use of the DG for the sup
Publicado em: 2009
-
10. Use of Wavelet Transforms to Detect Abnormal Frequency Variation in Distributed Generation Systems / Utilização da transformada de Wavelet para detectar variações anormais de freqüência em sistemas de geração distribuída
This dissertation focuses the importance of registering eventual frequency variations in Electric Power System which may cross the established limits for normal operation. These can cause serious problems in the operation of sensitive equipments connected to the electric grid, such as the turbo-generators employed in thermoelectric plants. For power system f
Publicado em: 2009
-
11. Reconfiguração dinâmica de estratégias distribuídas em dispositivos foundation fieldbus para a otimização de processos na indústria do petróleo
The petrochemical industry has as objective obtain, from crude oil, some products with a higher commercial value and a bigger industrial utility for energy purposes. These industrial processes are complex, commonly operating with large production volume and in restricted operation conditions. The operation control in optimized and stable conditions is import
Publicado em: 2009
-
12. Using a multi-agent system in communication networks for an adaptive digital distance protection system / Utilização de um sistema multi-agentes em redes de comunicação para a proteção digital de distância adaptativa
This research presents the development of an adaptive digital distance protection system by a multi-agent system (MAS). This MAS will work in a distributed way, with expert entities (agents) inserted in specific places and acting efficiently in the solution of local problems. With the application of the MAS, the distance relays will have desirable characteri
Publicado em: 2009