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Advisor(s)
Abstract(s)
Para a implementação do sistema fotovoltaico (FV) na província do Moxico – município de
Cazombo, avaliou-se o recurso energético solar do local e, tendo em conta o fato de este ser
um local afastado da capital da província, dimensionou-se a instalação FV isolada,
aproveitando a radiação solar numa superfície horizontal, que nesta província de Angola é de
aproximadamente 1800 kWh/m2 ano. A eletrificação rural permite que as ações sejam
quantificadas e repensadas de forma a reforçar o carácter sustentável do planeamento e na
própria característica inclusiva que a energia pode assumir perante os outros aspetos
envolvidos na melhoria da qualidade de vida da população.
O objetivo principal deste estudo é o dimensionamento de um sistema/instalação fotovoltaico
isolado para o município do Cazombo. Para se alcançar este objetivo, surgiu a necessidade de
pesquisar e analisar os dados de temperatura e irradiância do local em estudo, uma vez que
o desempenho dos sistemas FV depende da temperatura e da intensidade da radiação
incidente sobre os painéis FV. Estes dados foram apresentados em graficos de extremos e
quartis, nos quais se podem observar as variações da temperatura e da irradiância em cada
hora.
Para o dimensionamento de um sistema isolado é imprescindível que se conheça o perfil de
carga da zona de implementação da instalação, para que a partir desse perfil se determine
os restantes elementos da instalação tais como: número de painéis a instalar, capacidade do
banco de baterias, número de reguladores de carga, potência máxima do inversor (no uso de
cargas CA) e, se possível, as secções dos condutores para os circuitos da instalação FV.
Após a determinação de todos os elementos contituintes da instalação ter-se-á que realizar a
simulação do sistema, recorrendo-se a algoritmos realizados no software MATLAB, mais
especificamente para a implementação dos modelos das baterias e dos modelos fotovoltaicos.
A análise destas simulações, para cada estação do ano, representadas pelos meses de janeiro
e julho, e para cada semana, permite calcular o custo da instalação FV, que se considera
poder ser rentável para a empresa nacional de distribuição de eletricidade de Angola, devido
à grande distância a que o local da instalação FV isolada se encontra da rede pública.
For the implementation of the isolated photovoltaic system (PV) in the province of Moxico – municipality of Cazombo, the solar energy resources of the site were evaluated and, considering that it is a location far from the capital of the province, the isolated PV installation was designed, taking advantage of the solar radiation from the horizontal surface, which in this province is approximately 1800 kWh/m2 year. Rural electrification allows actions to be quantified and rethought in order to reinforce the sustainable nature of the system and the very inclusive characteristic that energy can assume in relation to other aspects, like improving the quality of life of the population. The objective of this study is the design of an isolated photovoltaic system/installation for the municipality of Cazombo. In order to achieve this objective, it was necessary to collect and analyze temperature and irradiance data of the location under study, since PV systems performance depends on the temperature and intensity of the radiation incident on the PV panels. These data were presented in extreme and quartile graphs, in which it is possible to observe the variation of temperature and irradiance for each hour. For the design of an isolated system, it is essential to know the load profile of the area covered by the installation, so that from the load profile the remaining elements of the installation can be determined, such as: number of panels to be installed, capacity of the battery bank, number of charge regulators, maximum inverter power (when using AC loads) and, if possible, the conductor sections for the PV installation circuits. After determining all the elements of the installation, it is necessary to perform a simulation task, by using algorithms working in SOFTWARE MATLAB platform, specifically for the mathematical modeling of battery and photovoltaic system models. The installation simulation analyzes, for each season, represented by January and July months, and for each week, allows the calculation of the PV installation cost, which is considered to be a profitable investment for the national electricity distribution company in Angola, due to the great distance that the location of the isolated PV installation is from the public grid.
For the implementation of the isolated photovoltaic system (PV) in the province of Moxico – municipality of Cazombo, the solar energy resources of the site were evaluated and, considering that it is a location far from the capital of the province, the isolated PV installation was designed, taking advantage of the solar radiation from the horizontal surface, which in this province is approximately 1800 kWh/m2 year. Rural electrification allows actions to be quantified and rethought in order to reinforce the sustainable nature of the system and the very inclusive characteristic that energy can assume in relation to other aspects, like improving the quality of life of the population. The objective of this study is the design of an isolated photovoltaic system/installation for the municipality of Cazombo. In order to achieve this objective, it was necessary to collect and analyze temperature and irradiance data of the location under study, since PV systems performance depends on the temperature and intensity of the radiation incident on the PV panels. These data were presented in extreme and quartile graphs, in which it is possible to observe the variation of temperature and irradiance for each hour. For the design of an isolated system, it is essential to know the load profile of the area covered by the installation, so that from the load profile the remaining elements of the installation can be determined, such as: number of panels to be installed, capacity of the battery bank, number of charge regulators, maximum inverter power (when using AC loads) and, if possible, the conductor sections for the PV installation circuits. After determining all the elements of the installation, it is necessary to perform a simulation task, by using algorithms working in SOFTWARE MATLAB platform, specifically for the mathematical modeling of battery and photovoltaic system models. The installation simulation analyzes, for each season, represented by January and July months, and for each week, allows the calculation of the PV installation cost, which is considered to be a profitable investment for the national electricity distribution company in Angola, due to the great distance that the location of the isolated PV installation is from the public grid.
Description
Keywords
Dimensionamento do Sistema
Fotovoltaico Instalação Fotovoltaica Isolada Módulo/Painel Fotovoltaico Município de Cazombo