Grid Requirements
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Distributed generators performance during short-circuits considering fault ride-through requirements / Desempenho de geradores distribuídos durante curtos-circuitos considerando requisitos de suportabilidade a afundamentos de tensão = : Distributed generators performance during short-circuits considering fault ride-through requirements
The increase of distributed generation penetration in distribution systems not only helps to diversify the electrical matrix but also brings both technical and economic benefits. Yet, it also raises worries related to energy supply reliability. For wind power plants into the medium and high voltage networks there are the grid codes for "Fault Ride-Through" w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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2. Grades computacionais baseadas em modelos economicos / Grid computing based on economic models
Grid computing is a paradigm that allows the sharing of heterogeneous resources, geographically distributed and under independent administration. Sharing must be done to optimize the use of resources and meet quality of service requirements. Economic models can be applied to provide a fair allocation of these resources and to promote the entry of a greater n
Publicado em: 2010
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3. CONTRIBUIÇÃO AO ESTUDO DO GERADOR DE INDUÇÃO DUPLAMENTE ALIMENTADO: OPERAÇÃO DURANTE DISTÚRBIOS NA REDE ELÉTRICA / CONTRIBUTION TO STUDY OF DOUBLY-FED INDUCTION GENERATORS: OPERATION UNDER NETWORK DISTURBANCES
Turbinas eólicas modernas que utilizam o Gerador de Indução Duplamente Alimentado (GIDA) são amplamente empregadas para geração de energia elétrica. Essa grande parcela de aero-geradores baseados na tecnologia GIDA e técnicas de controle vetorial clássicas já comprovaram ao longo dos últimos anos que este conceito apresenta méritos e foi capaz de
Publicado em: 2010
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4. Xenia: a security system for grid computing based on trust chains / Xenia: um sistema de segurança para grades computacionais baseado em cadeias de confiança
Grid Computing Systems are inherently more vulnerable to security threats than traditional systems, since they potentially encompass a large number of users, resources, and applications managed by different administrative domains. Authentication and authorization are imperative for grid systems. Since scalability and distribution are major concerns on grid e
Publicado em: 2008
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5. Arquitetura de computação em grade aplicada a saúde: um estudo de caso em bioinformática para oncologia. / Architecture of grid computing applied to health: a case study in bioinformatics for oncology.
Cancer is currently the third cause of death in both sexes and among all age ranges. The Brazilian Ministry of Health reports that the high complexity of oncology care demands high financial costs and high technology. The activities of cancer research, prevention, diagnosis and treatment are increasingly becoming a multidisciplinary environment, including me
Publicado em: 2008
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6. MÃtodos de sincronizaÃÃo de conversores em sistemas de geraÃÃo distribuÃda / Converter synchronization methods for distributed generators systems
The use of frequency converters DC/AC to integrate renewable energy as distributed generation is becoming more common. In such applications, the synchronization with the voltage vector is fundamental to control the converters, particularly considering the new requirements on Low Voltage Ride Through demanded from the distributed generation. This work propose
Publicado em: 2008
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7. UM PROTOCOLO PARA DESCOBERTA E SELEÇÃO DE RECURSOS EM GRADES MÓVEIS AD HOC / A PROTOCOL FOR RESOURCE DISCOVERY AND SELECTION IN MOBILE AD HOC GRIDS
In the last few years, the use of mobile devices in computational grids has seen a growing interest. Nevertheless, a more challenging issue, the dynamic establishment of mobile grids on wireless ad hoc networks, has been so far only partially addressed. The first contribution of this thesis is the proposal of a software architecture for mobile grids that can
Publicado em: 2007
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8. Uma nova arquitetura para a representação das regras de negócio em modelos de objetos dinâmicos / An new architecture for representing business rules in dynamic object models
The Ground System Development Division (DSS) at INPE has always developed satellite control systems with architectures that may be used as much as possible by future satellites. The present challenge is to build an Adaptive Satellite Control System, using the technology of the Dynamic Object Model, so as to comply with later requirements without having to ma
Publicado em: 2005
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9. Reaching the global minimum in docking simulations: A Monte Carlo energy minimization approach using Bezier splines
The docking problem faces two major challenges: the global optimization of a multivariable function, such as the energy, and the ability to discriminate between true and false positive results, i.e., native from nonnative structures based on the input energy function. Among all energy evaluation tools, only a local energy-minimization method using an accurat
The National Academy of Sciences.
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10. Expression of the beta subunit of spectrin in nonerythroid cells.
Antibodies raised against electrophoretically purified chicken erythrocyte beta subunit of spectrin, called "beta-spectrin," have been used to demonstrate the presence of an immunoreactive form of this polypeptide in nonerythroid tissues. Immunoautoradiography shows that, in chicken erythrocytes, this antiserum reacts with beta-spectrin (Mr 220,000) and anot