PLENÁRIAS

Plenária especial - 50 anos de Redes de Petri

 

As redes de Petri surgiram, para a comunidade científica, em 1962 quando Adam Petri apresentou sua tese de doutorado na Universidade de Bonn, embora o conceito tenha sido criado em 1939 (vinte e três anos antes) quando Petri tinha apenas 13 anos. Essa representação matemática para sistemas distribuídos discretos encontrou vários domínios de aplicação, entre os quais se destacam a automação da manufatura, protocolos de comunicação, bancos de dados e sistemas distribuídos, de produção, de transporte, de informação e logísticos.

Por essa razão o CBA 2012 está celebrando os 50 Anos de Redes de Petri. Para tanto, está promovendo esta Sessão Plenária Especial.

Moderador

:

Prof. José Reinaldo Silva (USP).

Sala

:

Auditório “Luiz Gonzaga”

Data

:

Segunda-feira, 3 de Setembro, 2012

Horário

:

08:00 – 09:40

Palestra  1

:

Prof. Manuel Silva, Universidade de Zaragoza, Espanha – “My relations with nets and Petri

Palestra  2

:

Prof. Luis Gomes, Universidade Nova de Lisboa, Portugal – “Composition and decomposition of Petri net models within distributed embedded controller design”.

Plenária 1 - Adaptive and Control: A panacea in one aspect in the march to a smarter grid

Ministrante

:

Om Malik, University of Calgary, Canadá.

Sala

:

Auditório “Luiz Gonzaga”

Data

:

Terça-feira, 4 de Setembro, 2012

Horário

:

08:00 – 09:40

Abstract

:

Power systems engineers have always been on the forefront of exploring and utilizing any new enabling technology, as it became available, to improve the operation of power systems, i.e. making it smarter. Even though the term ‘Smart Grid’ has become ubiquitous very recently, its definition is flexible. 

Meaning and understanding of Smart grid is usually multifaceted to variable audiences. Although it is difficult to identify exactly what it is or understand its potential advantages and concerns, one generic definition is given as;

“A smart grid is a digitally enabled electric grid that gathers, distributes and acts on information about the behavior of all components in order to improve the efficiency, reliability and sustainability of electricity services.”

Application of adaptive and artificial intelligence control to one aspect of power systems, that is improving the stability by improving the damping of local and inter-area oscillations in an interconnected power system will be described in this presentation. Basic theory and effectiveness of the proposed approach will be illustrated by simulation studies and experimental results of on-line real-time studies on physical power systems. It will be shown how the use of modern control techniques can improve the power system reliability by automatically tracking the system state thus making the system smarter.

 

Plenária 2 - Network control through distributed optimization – A Tutorial

Ministrante

:

Prof. Fernando Paganini, Universidade ORT, Uruguay.

Sala

:

Auditório “Luiz Gonzaga”

Data

:

Quarta-feira, 5 de Setembro, 2012

Horário

:

08:00 – 09:40

Abstract

:

Today’s Internet is a gigantic, complex communications infrastructure, shared by end-to-end connections which compete for the bandwidth resources. What is the resulting allocation? The answer is highly dependent on multiple automatic control mechanisms embedded in the network protocols, which dynamically adjust flow rates, routing, medium access, etc., making the Internet probably the largest scale artificial control system in operation. Is there any hope for a mathematical analysis or synthesis at this huge scale? Research over more than a decade has shown that substantial progress is possible by casting the problem in the language of economic theory and convex optimization. These tools combine with methods of dynamics and control to provide useful insights into current behavior, and design proposals with provable performance at multiple protocol layers. In this talk we will give a tutorial overview of this field of research.

Plenária 3 - Power Electronics for Alternative Energy Systems

Ministrante

:

Prof. Marcelo Godoy Simões, School of Mines of Colorado, USA.

Sala

:

Auditório “Luiz Gonzaga”

Data

:

Quinta-feira, 6 de Setembro, 2012

Horário

:

08:00 – 09:40

Abstract

:

Optimization of electrical system performance is important for the long-term economic viability of distributed and alternative energy systems and it is very important to understand the integration of these systems with the electric power grid. New markets and benefits for distributed energy applications include the ability to provide ancillary services, improve energy efficiency, enhance power system reliability, and allow customer choice. Advanced power electronic interfaces will allow increased functionality through improved power quality, increase electrical system compatibility by reducing the fault contributions, and flexibility in operations with various other distributed energy sources, while reducing overall interconnection costs. The advances of power electronics are very important for integrating alternative and renewable energy to the utility grid, and in the last few years, the “Smart Energy” paradigm has been embraced to ensure balanced economic growth and environmental sustainability, and the new concept of “Smart Grid” became a critical enabler in the contemporary world, with increased attention of policy makers and engineers.

 

Keywords :  alternative energy, renewable energy, power electronics, smart-grid