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Abstract(s)
As fontes de energia renovável têm sido utilizadas como resposta à dependência das fontes de
energia fóssil. Neste contexto, a energia solar fotovoltaica (FV) tem vindo a assumir uma ´
importância crescente.
Em Portugal, a definição do regime de microprodução possibilitou a instalação de sistemas FV
com alguns kW de potencia instalada. No início de 2015, com a introdução do novo regime ˜
para a produção distribuída, tornou-se possível a produção de energia em regime de ˜
autoconsumo a partir de pequenos sistemas FV.
Num mercado tão competitivo como o solar FV, as soluções de produção de energia são
comercializadas com o menor custo possível. Habitualmente, uma forma de reduzir este custo
consiste em não incluir um sistema de monitorização adequado, que permita o ˜
acompanhamento da instalação FV. Consequentemente, torna-se difícil avaliar se o
desempenho da instalação está de acordo com o esperado, traduzindo-se, muitas vezes, na
perda de produção de energia elétrica. ´
Esta dissertação enquadra-se neste âmbito, tendo como principal objetivo o desenvolvimento
de um sistema de monitorização de baixo custo para instalações FV de pequena dimensão.
Este sistema e caraterizado por ser uma solução completa de monitorização, com baixo custo
quando comparado com o custo da instalação FV, e de fácil instalação nos pequenos sistemas
FV.
O sistema de monitorização desenvolvido permite a recolha, armazenamento e visualização
(através de uma interface Web) das variáveis elétricas e meteorológicas relevantes para a
adequada monitorização de instalações FV de pequena dimensão, dotadas de um inversor
monofásico. Além disso, o sistema desenvolvido possibilita a identificação de situações de
falha de produção de energia e permite efetuar análises de desempenho ´ a instalação (através do
calculo de vários indicadores). Por ´ ultimo, o sistema desenvolvido permite a integração com o ˜
sistema central de supervisão da Martifer Solar, possibilitando o acompanhamento diário da ´
instalação FV por uma equipa especializada.
Este trabalho foi desenvolvido em parceria com a Martifer Solar, empresa focada no
desenvolvimento, Engenharia, Gestão de Compras e Construção (EPC) e serviço de Operação
e Manutenção (O&M) das centrais FV.
ABSTRACT: Renewable energy has been used to deal with the dependence of the energy produced through the use of fossil resources. In this context, the photovoltaic (PV) solar energy is a growing reality. In Portugal, the old regime of microgeneration allowed the installation of PV plants with few kW of installed power. In early 2015, this regime was replaced by a new one that allows energy for selfconsumption to be generated through the use of small PV plants. In a market so competitive as the photovoltaic, the solutions for eletricity generation are sold at the possible lowest cost. Typically, one of the adopted options to reduce these costs consists in avoiding the inclusion of an appropriate monitoring system, which would enable to follow the behavior of the PV plant. Consequently, it becomes difficult to evaluate if the performance of the PV plant is in agreement with the expected, often resulting in the loss of energy production. This work falls within this context, being its main objective the development of a low-cost monitoring system devoted to small sized PV plants. The developed system is characterized by being a complete monitoring solution, with low cost when compared to the cost of a PV system, and by its easy installation with small PV plants (single inverter plants with installed power up to few kW). The developed monitoring system is able to collect, store and display electrical and environmental variables that are relevant for a suitable monitoring of a small PV plant. Moreover, it can identify situations of energy production failures and analyze the performance of a PV plant (by calculating performance indicators). Finally, the developed system allows the integration with the central system of supervision of Martifer Solar, which makes the daily monitoring of PV plant by an expert team possible. This work was developed in partnership with Martifer Solar, a fully-integrated player in the global photovoltaic market focused on Development, EPC (Engineering, Procurement, and Construction) and Operation and Maintenance (O&M) Service.
ABSTRACT: Renewable energy has been used to deal with the dependence of the energy produced through the use of fossil resources. In this context, the photovoltaic (PV) solar energy is a growing reality. In Portugal, the old regime of microgeneration allowed the installation of PV plants with few kW of installed power. In early 2015, this regime was replaced by a new one that allows energy for selfconsumption to be generated through the use of small PV plants. In a market so competitive as the photovoltaic, the solutions for eletricity generation are sold at the possible lowest cost. Typically, one of the adopted options to reduce these costs consists in avoiding the inclusion of an appropriate monitoring system, which would enable to follow the behavior of the PV plant. Consequently, it becomes difficult to evaluate if the performance of the PV plant is in agreement with the expected, often resulting in the loss of energy production. This work falls within this context, being its main objective the development of a low-cost monitoring system devoted to small sized PV plants. The developed system is characterized by being a complete monitoring solution, with low cost when compared to the cost of a PV system, and by its easy installation with small PV plants (single inverter plants with installed power up to few kW). The developed monitoring system is able to collect, store and display electrical and environmental variables that are relevant for a suitable monitoring of a small PV plant. Moreover, it can identify situations of energy production failures and analyze the performance of a PV plant (by calculating performance indicators). Finally, the developed system allows the integration with the central system of supervision of Martifer Solar, which makes the daily monitoring of PV plant by an expert team possible. This work was developed in partnership with Martifer Solar, a fully-integrated player in the global photovoltaic market focused on Development, EPC (Engineering, Procurement, and Construction) and Operation and Maintenance (O&M) Service.
Description
Keywords
Instalação Fotovoltaica Sistema de Monitorização Raspberry Pi Aquisição de Dados Base de Dados Interface Web
Citation
Publisher
Instituto Politécnico de Viseu. Escola Superior de Tecnologia e Gestão de Viseu