Anteprojeto de um sistema digital de proteção e controle aplicado em uma subestação elétrica industrial

With the growth of the demand on electric energy in the last decades, the urban distribution and transmission systems have experienced a bigger necessity to improve on the substations, the automation procedures and techniques on the operation maneuvers of such systems, in a sense that better attends the quality levels, availability, continuity and operational reliability. In this way, the objective of the present paper is to perform a study of protection and control on an electrical industrial system involving the procedures of digitizing and maneuvers automatism utilizing operational techniques and other pertinent information used in a typical high-voltage Industrial Electrical System. Analysis were made on short-circuits to specify the main components of the 138 [kV] substation, in addition, there were used digital MiCOM relays to make the protection of the present elements. With that, a program was developed to allow the user to monitor the condition of circuit-breakers through a supervision screen being able to simulate some kinds of faults, as well as observing the characteristics of each device. This way, the importance of having a fast and reliable system that ensures the equipment’s protection and the industrial process continuity due to faults on the electrical system is noticeable. It’s important to highlight that all this digitizing was mainly favored by the development of digital technology on the last years, mainly on microelectronics, also with the appearance of supervision gadgets allowing the development of complex systems in supervision and electric energy control

Algoritmos para geração de referências, inicialização e proteção de um condicionador unificado de qualidade de energia

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A proteção dos direitos autorais a partir da realidade Internet: a perspectiva brasileira

Pós-graduação em Ciência da Informação - FFC

Inversores integrados monofásicos e trifásicos para aplicações fotovoltaicas: técnicas para obtenção de mppt, detecção e proteção de ilhamento, sincronização e paralelismo com a rede de distribuição de energia elétrica

Pós-graduação em Engenharia Elétrica - FEIS

Criação, proteção e uso legal de informação em ambientes da World Wide Web

Um número cada vez maior de produtores de conteúdo informacional, embora de acordo com os padrões culturais prevalecentes nem sempre seja considerado qualitativamente favorável, evidencia uma nova configuração cultural exponencialmente representativa no fluxo da informação em que o indivíduo, que não há muito tempo era um mero consumidor de conteúdo intelectual, é agora também um participante ativo na criação desses conteúdos. Os indivíduos que lidam com essas novas formas de produzir, disseminar e usar conteúdos informacionais devem estar conscientes das diferenças que se impõem quando a informação é digital. Eles devem conhecer as implicações quanto ao fluxo da informação e seus aspectos simbólicos, bem como saber sob quais condições a lei de direitos autorais estabelece que essas práticas devam acontecer.

Web colaborativa: inovação na criação, proteção e uso legal de informação

In the contemporary world, the Internet enables the development of a Collaborative Web where the decentralization and sharing of information and knowledge generate new cultural configurations of increasing representation in informational flows. In this environment, collaboration and remix practices are covered by a legislation established for another context, and an imbalance is created between what is provided by the technology and what is established by Copyright. Therefore, it is necessary to address, under the perspective of the third time in Information Science, contemporary issues concerning creation, recreation, use, reuse, sharing and dissemination of intellectual content under the legislation which regulates them. This article seeks to highlight the dilemma that contemporaneity is experiencing and how important is for both society as a whole and specially the professional of Information Science to know the legal conditions for the processes of generating, processing, using, recovering and, especially, re-using information on the Web at a larger scale. The Creative Commons licenses are emerging alternatives that offer individuals options to become not only users but also holders and creators of intellectual content under legal conditions.

Desenvolvimento de um anteprojeto de um sistema de digitalização da proteção e controle aplicada a uma subestação elétrica industrial de alta tensão

The proposed of scanning of an electrical industrial substation HV is associated with a segment of the Electrotechnical area and aims the study and preliminary application of digital technologies in the protection, control, measurement and automation maneuvers aimed at a Industrial Electrical System typical High Voltage. Well intended to supervision, protection and control of major electrical and thermal quantities involved in a substation, such as voltage levels, current, temperature, power factor, loads of transformers and circuit feeders, status of interlocking devices, switching equipment maneuvers, etc