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Energies 2018, 11(6), 1539;

Study of Power Quality at the Point of Common Coupling of a Low Voltage Grid and a Distributed Generation System of 7.8 kWp in a Tropical Region

Facultad de Ingeniería, Universidad de Ibagué, Ibagué 730001, Colombia
School of Engineering, Universidade Estadual Paulista (UNESP) Câmpus Guaratinguetá, Guaratinguetá 01049-010, Brazil
Author to whom correspondence should be addressed.
Received: 25 May 2018 / Revised: 6 June 2018 / Accepted: 7 June 2018 / Published: 13 June 2018
(This article belongs to the Special Issue Building Renewable Energy and Thermal Energy Storage System 2018)
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In this paper we analyze an experimental 1000 kWh/month distributed generation system in a tropical region connected to a point of common coupling in a low voltage grid that was characterized according to NTC 5001. This photovoltaic system has 7.8 kWp and uses 30 polycrystalline silicon-panels of 260 Wp each. Its maximum energy produced was 850 kWh/month, equivalent to 72.65% of the installed capacity. Finally, there was an increase of 2% with respect to the minimum voltage value that was recorded. The voltage unbalance decreases between 3.5 and 70% and voltage harmonics in each line increased by 7% on line U1, 0.8% on U2, 3% on U3 and current harmonics have a 22% increase. Likewise, the total active and reactive power were increased by 58% and 42% respectively, and the thermography study allowed to establish a temperature increase at the point of common coupling of 7.5%. Therefore, it is expected that this paper can serve as a reference for the application of Colombian law 1715 in solar energy. View Full-Text
Keywords: solar energy; experimental network; power quality; low voltage solar energy; experimental network; power quality; low voltage

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Granja, A.V.; de Souza, T.M.; Sobrinho, P.M.; Santos, D.F.A. Study of Power Quality at the Point of Common Coupling of a Low Voltage Grid and a Distributed Generation System of 7.8 kWp in a Tropical Region. Energies 2018, 11, 1539.

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