Análise de impactos na rede de distribuição de energia elétrica decorrentes da inserção de sistemas de geração fotovoltaicos
Currently, incentives for clean energy generation have been increasing considerably due to the limitation of fossil fuels, until then used in abundance. In parallel, distributed generations increase with the reduction of the taxes of the embedded components of the renewable energy sources. Howeve...
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| Formato: | Dissertação |
| Idioma: | por |
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/24007 |
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| Resumo: | Currently, incentives for clean energy generation have been increasing considerably
due to the limitation of fossil fuels, until then used in abundance. In parallel, distributed
generations increase with the reduction of the taxes of the embedded components of the
renewable energy sources. However, the power quality (PQ) has been severely affected
by the increasing number of these types of energy sources connected to low voltage distribution
networks. In this dissertation, the impact on the utility grid will be evaluated
under varying levels of a photovoltaic system penetration. A 9 kWp photovoltaic plant,
composed of three system topologies connected to a 15 kVA substation common coupling
point, will be carried out: a 8 kWp three-phase fixed topology and a 1 kWp fixed
single phase. These photovoltaic systems are power electronics based devices, such as
inverters constructed from semiconductor switches, which, due to their construction and
operation, affect the waveform of the electrical voltage and current, deteriorating the PQ.
From the analysis of PQ indices, obtained by means of discrete Fourier transform, for
power characteristics, voltage and current harmonics, imbalanced levels among system
phases and power factor regulation, an analysis of the impact generated by the photovoltaic
plant at its point of connection with the utility grid will be performed. The indices will
be analyzed and compared to the standards established by the Institute of Electrical and
Electronics Engineers (IEEE) in order to evaluate the impact caused by the connection of
the photovoltaic system at the PCC. |
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