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Esta dissertação estuda a integração de geração fotovoltaica para autoconsumo com a valorização elétrica da energia anteriormente dissipada em calor nos ensaios dos grupos eletrogéneos, complementada por um banco de baterias e por um controlador dos modos de operação do conversor de potência, integrado na rede AC da fábrica. O trabalho utiliza dados reais de consumo, potência fotovoltaica instalada e energia dissipada nos bancos de carga, e recorre a simulação numérica para dimensionamento e avaliação do desempenho.
A avaliação económico-financeira, para um horizonte de 25 anos, indica que a configuração com dois módulos de baterias (144 kWh) apresenta VAL de 67 840 € e TIR de 11,0%, mantendo viabilidade sob a tarifa horária. Em termos ambientais, a solução final reduz 64,2 tCO2e/ano, o que corresponde a 27,2% da meta de redução definida para a fábrica.
Os resultados demonstram a exequibilidade técnica do sistema e a sua contribuição simultânea para a eficiência energética e a redução de emissões, em linha com os objetivos da Grupel.
This dissertation examines the integration of photovoltaic generation for self-consumption with the electrical recovery of energy previously dissipated as heat during generator-set (GE) test runs, complemented by a battery energy storage system and a controller for the operating modes of the power converter, integrated into the factory’s AC grid. It uses measured factory consumption data, installed PV capacity, and energy dissipated in the resistive load banks, and employs numerical simulation for sizing and performance assessment. The 25 year economic-financial assessment indicates that the configuration with two battery modules (144 kWh) yields an VAL of 67 840€ and an TIR of 11%, remaining viable under the time-of-use tariff. Environmentally, the final solution reduces 64.2 tCO2e/year, corresponding to 27,2% of the factory’s reduction target. The results demonstrate the system’s technical feasibility and its simultaneous contribution to energy efficiency and emissions reduction, in line with Grupel’s objectives.
This dissertation examines the integration of photovoltaic generation for self-consumption with the electrical recovery of energy previously dissipated as heat during generator-set (GE) test runs, complemented by a battery energy storage system and a controller for the operating modes of the power converter, integrated into the factory’s AC grid. It uses measured factory consumption data, installed PV capacity, and energy dissipated in the resistive load banks, and employs numerical simulation for sizing and performance assessment. The 25 year economic-financial assessment indicates that the configuration with two battery modules (144 kWh) yields an VAL of 67 840€ and an TIR of 11%, remaining viable under the time-of-use tariff. Environmentally, the final solution reduces 64.2 tCO2e/year, corresponding to 27,2% of the factory’s reduction target. The results demonstrate the system’s technical feasibility and its simultaneous contribution to energy efficiency and emissions reduction, in line with Grupel’s objectives.
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Armazenamento de energia Autoconsumo Avaliação económica Eficiência energética Micro-rede inteligente Solar fotovoltaico Economic assessment Energy efficiency Energy storage Self-consumption Smart microgrid Solar photovoltaic