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Energies 2018, 11(6), 1539; https://doi.org/10.3390/en11061539

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

1
Facultad de Ingeniería, Universidad de Ibagué, Ibagué 730001, Colombia
2
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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Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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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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