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Abstract(s)
As energias renováveis têm sido cada vez mais proeminentes para satisfazer as necessidades energéticas globais de forma não destrutiva ao planeta, especialmente agora em que o mundo está a entrar numa fase de decremento de energias fósseis e aumento dos preços da energia. Portugal, país com poucas reservas de energias fósseis e elevada dependência energética do exterior, tem sido dos países que mais tem investido em energias renováveis ao longo dos anos. Porém, os recursos renováveis como a água, a luz solar e o vento são relativamente imprevisíveis visto que estão dependentes das condições climáticas, o que pode causar variabilidades na produção de energia. De forma a colmatar esta desvantagem, sistemas de armazenamento de energia têm vindo a ser implementados com vista a reduzir estas variabilidades, tornando as energias renováveis num recurso mais estável ao fornecer energia quando há uma diminuição da produção desta. Neste enquadramento, o objetivo deste trabalho é avaliar um sistema de armazenamento de energia, ou seja, determinar as suas características técnicas ideais de forma a se obter um maior lucro possível, a ser instalado na central eólica do Alto Douro, pertencente à empresa Finerge. Para isso foi realizado um estudo da quantidade de energia a ser utilizada pelo sistema de armazenamento de energia, tendo sido feita posteriormente uma simulação de modo a determinar o comportamento do sistema em relação à utilização da energia e lucro obtido, alterando-se variáveis como a potência e a eficiência. Concluiu-se que baterias de ião lítio com elevada capacidade de potência e pouco tempo de carga e descarga são a solução ideal para este projeto, sendo a eficiência das baterias e a sua modularidade bastante importantes para o lucro obtido no presente e no futuro.
Renewable energies have been ever more prominent to satisfy global energy needs in a non destructive way to the planet, especially now that the world is entering a fase of fossil energy decrease and an increase in energy prices. Portugal, a country with few fossil energy reserves and high energy dependence from the outside, has been one of the countries that has invested more in renewable energies in these past years. However, renewable resources such as water, sunlight and the wind are relatively unpredictable since they are dependent on climate conditions, which may cause variabilities in energy production. To face this disadvantage, energy storage systems have been continuously implemented to reduce these variabilities, making renewable energies a more stable resource by supplying energy when there is a decrease in its production. With this in mind, the objective of this project is to evaluate an energy storage system, that is, to determine its ideal technical characteristics in order to obtain the most profit possible, to be installed in the Alto Douro wind farm, belonging to the company Finerge. For that, a study of the quantity of energy to be used by the energy storage system was made, with a simulation being made after in order to determine the behavior of the system relative to the energy utilization and profit made, altering variables such as power and efficiency. It was concluded that lithium ion batteries with a high power capacity and low charge and discharge times are the ideal solution for this project, with its efficiency and modularity being extremely important for the profit obtained in the present and future.
Renewable energies have been ever more prominent to satisfy global energy needs in a non destructive way to the planet, especially now that the world is entering a fase of fossil energy decrease and an increase in energy prices. Portugal, a country with few fossil energy reserves and high energy dependence from the outside, has been one of the countries that has invested more in renewable energies in these past years. However, renewable resources such as water, sunlight and the wind are relatively unpredictable since they are dependent on climate conditions, which may cause variabilities in energy production. To face this disadvantage, energy storage systems have been continuously implemented to reduce these variabilities, making renewable energies a more stable resource by supplying energy when there is a decrease in its production. With this in mind, the objective of this project is to evaluate an energy storage system, that is, to determine its ideal technical characteristics in order to obtain the most profit possible, to be installed in the Alto Douro wind farm, belonging to the company Finerge. For that, a study of the quantity of energy to be used by the energy storage system was made, with a simulation being made after in order to determine the behavior of the system relative to the energy utilization and profit made, altering variables such as power and efficiency. It was concluded that lithium ion batteries with a high power capacity and low charge and discharge times are the ideal solution for this project, with its efficiency and modularity being extremely important for the profit obtained in the present and future.
Description
Keywords
Arbitragem de preços Bateria Curtailment Mercado grossista de eletricidade Battery Curtailment Price arbitrage Wholesale electricity market