Marco experimental para microrredes a escala de laboratorio (original) (raw)
Experimental framework for laboratory scale microgrids
Revista Facultad de Ingeniería Universidad de Antioquia, 2016
This increase in the use of renewable energy and the outlook of consumption increase in the coming years is driving an increase in the research on new technologies applied to distribution networks, better known as smart grids. In a local level, closer to the final user, the decision-making strategy is more dynamic, and a set of definitions more suited for this level are defined for the so called microgrids. These microgrids are network segments with processing
The term "Smart Grid" can be described as technology innovation that people are utilizing to bring utility electricity distribution and consumption system into the modern era, by increased use of information technology, communications and automation. Micro-grid can be referred to as a small scale power gird that operates independently grid in combination with the main electrical grid. A microgrid control system allows an orchestration of generation, storage, load and demand for energy. Microgrid can make application of smart grid much easier with great improved reliability. Smart microgrid is an ideal way to incorporate the variable renewable energy sources at a local level. Some advantages include reliability, cost reduction and carbon emission reduction. Smart meters can be installed in a specific area which can track power consumption and generation and send the data to microgrid. Data sent to microgrid is analysed and stored for recycling of energy. Smart grid when implemented to microgrid can increase the systems reliability and efficiency by intelligent transmission and distribution network between users and microgrid. Benefits and new technology advancements made in smart Microgrid will be discussed in this paper.
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...
SMART GRIDS -A COMPREHENSIVE OVERVIEW
This paper presents a discussion of the future of the electric energy system, addressing the entire spectrum from power generation, through substations, to distribution, the customer, and the feedback loops along the way necessary to provide the computational intelligence necessary to make the "Smart Grid". The need for updating the electric energy infrastructure and constructing such Smart Grids globally has been acknowledged by both the federal and state governments. We are amid a historic paradigm shift, with the chance to put new, smarter processes in place for producing, distributing, delivering, and consuming electricity in a way that is significantly more sustainable, efficient, and versatile.
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.
Modelling of an Intelligent Microgrid System in a Smart Grid Network
2018
To achieve the goal of decarbonising the electric grid by 2050 and empowering energy citizen, this research focuses on the development of Microgrid (µGrid) systems in Irish environment. As part of the research work, an energy efficient and cost effective solution for µGrid, termed Community-µGrid (C-µGrid) is proposed. Here the users can modify their micro-Generation (µGen) converters to facilitate a single inverter in a C-µGrid structure. The new system could allow: (i) technological advantage of improved Power Quality (PQ); (ii) economic advantage of reduced cost of energy (COE) to achieve sustainability. Analysis of scenarios of C-µGrid (AC) systems is performed for a virtual community in Dublin, Ireland. It consists of (10 to 50) similar type of residential houses and assumes that each house has a wind-based µGen system. It is found that, compared to individual off-grid µGen systems, an off-grid C-µGrid can reduce upto 35% of energy storage capacity. Thus it helps to reduce the COE from €0.22/kWh to 0.16/kWh.
Applied Sciences
This paper shows an experimental application case to convert a part of the grid formed by renewable generation sources, storage systems, and loads into a smart microgrid. This transformation will achieve greater efficiency and autonomy in its management. If we add to this the analysis of all the data that has been recorded and the correct management of the energy produced and stored, we can achieve a reduction in the electricity consumption of the distribution grid and, with this, a reduction in the associated bill. To achieve this transformation in the grid, we must provide it with intelligence. To achieve this, a four steps procedure are proposed: identification and description of the elements, integration of the elements in the same data network, establishing communication between the elements and the control system, creating an interface that allows control of the entire network. The microgrid of CEDER-CIEMAT (Renewable Energy Centre in Soria, Spain) is presented as a real case ...