Papers by Flávio Calhau
Anais de XXX Simpósio Brasileiro de Telecomunicações
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International Journal of Innovative Computing, Information and Control
Smart grid is a network and telecommunications infrastructure with a set of applications and tech... more Smart grid is a network and telecommunications infrastructure with a set of applications and technical features such as interoperability with legacy systems, two way communication, and ability to recover from failures, among others. Smart grid
architecture is highly based on communications networks with new required and inherent advantages, such as greater efficiency and reliability to the system, allowing communication between intelligent devices in network. Among the challenges for the development of new generation network for smart grids, it is possible to highlight security, monitoring, management, control, quality of service and new technology updates. This paper focuses on investigating mechanisms for management and monitoring with ubiquitous and autonomic features aimed to better support smart grid solutions.
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3rd International Workshop on ICT Infrastructures and Services – ADVANCE , Oct 30, 2014
Ensure higher levels of continuity and reliability for the electricity supply service are some of... more Ensure higher levels of continuity and reliability for the electricity supply service are some of the requirements of consumers and electric power providers in the Smart Grid (SG) context. Reconfiguration of distribution networks aims to support the decision support, planning and/or real-time control of the operation of the electricity network. The goal
of this paper is to propose a modelling approach for the reconfiguration problem based on R in order to better support the decision making process. Beyond that, R modelling of electricity networks may additionally support scalability evaluation, allows flexible re-configuration analysis and potentially improves the response time when handling issues of network reconfiguration using graph theory.
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Cyber Journals: Multidisciplinary Journals in Science and Technology, v. 3, p. 10-16, 2013
Smart grid is a network infrastructure and telecommunications with a set of applications and tech... more Smart grid is a network infrastructure and telecommunications with a set of applications and technical features such as interoperability with legacy systems, two-way communication, ability to recover from failures, among others. This architecture is highly based telecommunications networks with inherent advantages, such as greater efficiency and reliability to the system, allowing communication between intelligent devices in the network. Among the challenges for the development of new generation network to the grid smarts, use renewable resources, security, monitoring, management, control, quality of service and technology updates. The main goal of this paper is to investigate mechanisms for monitoring and supervision with ubiquitous and autonomic features aimed to supporting smart grid solutions with a case study in efficient management of renewable energy sources for the sustainability and social importance.
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E.T.C. Educação, Tecnologia e Cultura, Jul 7, 2014
Smart grid (redes inteligentes) é uma infraestrutura de redes e telecomunicações com um conjunto ... more Smart grid (redes inteligentes) é uma infraestrutura de redes e telecomunicações com um conjunto de aplicações e características técnicas tais como interoperabilidade com sistemas legados, comunicação bidirecional, capacidade de recuperação de falhas, dentre outras. Essa arquitetura é fortemente baseada em redes de telecomunicações com vantagens inerentes, tais como uma maior eficiência e confiabilidade para o sistema, permitindo a comunicação entre dispositivos inteligentes na rede. Entre os desafios para o desenvolvimento de uma rede de nova geração para as smarts grid, destacam-se a segurança, monitoramento, a gerência, o controle, a qualidade de serviço e a migração tecnológica. O objetivo deste trabalho consiste na investigação de mecanismos de monitoração e supervisão com características ubíquas e autonômicas visando o suporte das soluções de smart grid com requisitos temporais.
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SMART GRID by Flávio Calhau
BRACIS - 8th Brazilian Conference on Intelligent Systems, Oct 15, 2019
The complexity, heterogeneity and scale of electrical networks have grown far beyond the limits o... more The complexity, heterogeneity and scale of electrical networks have grown far beyond the limits of exclusively human-based management at the Smart Grid (SG). Likewise, researchers cogitate the use of artificial intelligence and heuristics techniques to create cognitive and autonomic management tools that aim better assist and enhance SG management processes like in the grid reconfiguration. The development of self-healing management approaches towards a cognitive and autonomic distribution power network reconfiguration is a scenario in which the scalability and on-the-fly computation are issues. This paper proposes the use of Case-Based Reasoning (CBR) coupled with the HATSGA algorithm for the fast reconfiguration of large distribution power networks. The suitability and the scalability of the CBR-based reconfiguration strategy using HATSGA algorithm are evaluated. The evaluation indicates that the adopted HATSGA algorithm computes new reconfiguration topologies with a feasible computational time for large networks. The CBR strategy looks for managerial acceptable reconfiguration solutions at the CBR database and, as such, contributes to reduce the required number of reconfiguration computation using HATSGA. This suggests CBR can be applied with a fast reconfiguration algorithm resulting in more efficient, dynamic and cognitive grid recovery strategy.
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ABSTRACT Smart Grid is an innovating solution for the electrical systems that consists in an inte... more ABSTRACT Smart Grid is an innovating solution for the electrical systems that consists in an integrated architecture for all system components, including generation, transmission, distribution, and users. This architecture is strongly based on telecommunications networks with potential and inherent advantages such as greater overall efficiency and system-wide reliability, providing communication among intelligent devices. This short-course explains the main smart grid concepts and challenges and explores the IEC 61850 standard which, in turn, standardizes the communications among devices. The IEC 61850 and other relevant protocols are the basic building blocks of a communication network in a smart grid style. The challenges discussed include a new generation of telecommunications network for the smart grid together with security, management, control, quality of service, and migration issues.
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TECHNICAL REPORTS by Flávio Calhau
JSMNet Networking and Technical Review - VOL 20 N 4, Oct 16, 2019
This "ILLUSTRATED ABSTRACT The complexity, heterogeneity and scale of electrical networks have gr... more This "ILLUSTRATED ABSTRACT The complexity, heterogeneity and scale of electrical networks have grown far beyond the limits of exclusively human-based management at the Smart Grid (SG). Likewise, researchers cogitate the use of artificial intelligence and heuristics techniques to create cognitive and autonomic management tools that aim better assist and enhance SG management processes like in the grid reconfiguration. The development of self-healing management approaches towards a cognitive and autonomic distribution power network reconfiguration is a scenario in which the scalability and on-the-fly computation are issues. This paper proposes the use of Case-Based Reasoning (CBR) coupled with the HATSGA algorithm for the fast reconfiguration of large distribution power networks. The suitability and the scalability of the CBR-based reconfiguration strategy using HATSGA algorithm are evaluated. The evaluation indicates that the adopted HATSGA algorithm computes new reconfiguration topologies with a feasible computational time for large networks. The CBR strategy looks for managerial acceptable reconfiguration solutions at the CBR database and, as such, contributes to reduce the required number of reconfiguration computation using HATSGA. This suggests CBR can be applied with a fast reconfiguration algorithm resulting in more efficient, dynamic and cognitive grid recovery strategy.
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Papers by Flávio Calhau
architecture is highly based on communications networks with new required and inherent advantages, such as greater efficiency and reliability to the system, allowing communication between intelligent devices in network. Among the challenges for the development of new generation network for smart grids, it is possible to highlight security, monitoring, management, control, quality of service and new technology updates. This paper focuses on investigating mechanisms for management and monitoring with ubiquitous and autonomic features aimed to better support smart grid solutions.
of this paper is to propose a modelling approach for the reconfiguration problem based on R in order to better support the decision making process. Beyond that, R modelling of electricity networks may additionally support scalability evaluation, allows flexible re-configuration analysis and potentially improves the response time when handling issues of network reconfiguration using graph theory.
SMART GRID by Flávio Calhau
TECHNICAL REPORTS by Flávio Calhau
architecture is highly based on communications networks with new required and inherent advantages, such as greater efficiency and reliability to the system, allowing communication between intelligent devices in network. Among the challenges for the development of new generation network for smart grids, it is possible to highlight security, monitoring, management, control, quality of service and new technology updates. This paper focuses on investigating mechanisms for management and monitoring with ubiquitous and autonomic features aimed to better support smart grid solutions.
of this paper is to propose a modelling approach for the reconfiguration problem based on R in order to better support the decision making process. Beyond that, R modelling of electricity networks may additionally support scalability evaluation, allows flexible re-configuration analysis and potentially improves the response time when handling issues of network reconfiguration using graph theory.