Marco experimental para microrredes a escala de laboratorio (original) (raw)

Optimized management of electrical loads in microgrids

2014

Dissertação de Mestrado, Engenharia Elétrica e Eletrónica, Instituto Superior de Engenharia, Universidade do Algarve, 2015A fim de alcançar uma redução de custo da energia elétrica e maximizar o potencial de investimentos feitos em fontes renováveis, um mecanismo de otimização deve ser usado para executar a programação das cargas dos dispositivos elétricos, levando em consideração diversas variáveis, tais como a produção local prevista a partir de fontes renováveis, diferentes taxas tarifárias, restrições de circuitos elétricos, restrições e níveis de conforto dos utilizadores. Dadas estas considerações, este trabalho define e avalia uma arquitetura e protocolo de gestão de uma Microgrid distribuída, que é capaz de otimizar a programação de cargas, tanto para instalações elétricas de pequena como de grande dimensão, considerando todas as restrições e parâmetros mencionados. A arquitectura proposta foi executada sob um simulador multi-agente e os testes realizados mostram que podem s...

Understanding Microgrids as the Essential Architecture of Smart Energy

This paper describes microgrids in the smart grid architecture, autonomous systems interacting through the Energy Services Interface as defined by the OASIS Energy Interoperation [1] specification. We define for the purposes of system architecture what a microgrid is. The several types of existing microgrids are defined, based on the motivations of those that operate them, the technologies they contain, and the operating characteristics they produce. This paper includes an analysis today's variety of microgrids and how they are leading us to future We describe a model that represents component systems in a microgrid as systems able to negotiate optimal outcomes for energy allocation based only on the internal self-knowledge of each system, interacting through the means of software agents. These agents are each able to respond to changes of mission as conveyed by the timely application of abstract sets of priorities [policies]. We term the process whereby these outcomes are devel...

Control and Management of Residencial Load in Micro-Grid

The importance of energy from renewable resources, such as wind and solar, is increasing and their penetration rate in power increases each year due to several factors. Firstly, the perpetual rise in demand, particularly because of population growth and economic development. Second, pledges made by many Governments to increase their reliance on renewable sources of energy, with a view to reducing the devastating consequences of climate change on the environment. The multiplication of decentralized production connected to the low-voltage power grid causes the appearance of a bidirectional energy flow. This is at the origin of many electrical phenomena that are increasingly difficult to manage it by distribution system operators. An innovative solution consists in controlling the integration of renewable energies and managed the flow of the powers for a different source. This work covers integration of renewable energy into the public grid for hybrid system. Or more precisely, a microgrid that contains two renewable energy sources (PV + wind), battery and public network all the system is connected in a residential charge. Furthermore, the control of all devices for this integration, management of load from renewable energy and public grid.

Generalities about design and operation of microgrids

The need for new generation systems has motivated the development of microgrids. This new concept may provide significant benefits such as losses reduction, high degree of efficiency and reliability to the transmission and distribution networks. This paper presents generalities about microgrids, including general structure and different topologies. Also an original methodology for facilitating its design and evaluation is proposed. Finally, the microgrid located at the Parque Tecnológíco de Guatiguará at the Universidad Industrial de Santander, is analyzed and an operation analysis is included for different operations stages of loads and generation, the performance of operation of storage systems, the interaction with the grid and an energy balance for all the system.