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Eleandro Luis Marques da Silva
Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Santa Maria, RS
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Renata Mota Martins
Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Santa Maria, RS
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Gustavo Marchesan
Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Santa Maria, RS
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Ghendy Cardoso Junior
Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal de Santa Maria, RS
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Leonardo Audalio Ferreira do Nascimento
Programa de Pós-Graduação em Engenharia Elétrica, Universidade Federal do Rio de Janeiro, RJ
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Enoque Dutra Garcia
Departamento de Engenharia de Energia, Universidade Federal do Pampa, RS
Keywords:
Distributed generation, Power Quality, Distribution System, Overvoltage, Harmonics
Abstract
The high insertion of Distributed Generation (DG) in the distribution networks can cause overvoltage in the feeders, in the low load condition and when there is high energy production by the Photovoltaic (PV) plants. Thus, resulting in the transgression of the voltage limits imposed by the regulatory agency. Other effect in energy quality are the harmonic distortions caused by frequency inverter. The objective of this paper is to present a case study in a low voltage system where there are photovoltaic plants of the self-consumption type remote, in order to verify the energy quality levels at the connection point. 1008 measurements were made in a period of seven days, where voltage and harmonics data were collected. It was found that in terms of the quality of voltage, there were transgressions in the periods of high generation, where the maximum voltage in the reading was 1.08 pu. There were no harmonic voltage violations according to the standard values. On the other hand, it was verified levels of current harmonics.
