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

Agustín Valverde Granja, Teófilo Miguel De Souza, Pedro Magalhães Sobrinho and Daniel Felipe Arévalo Santos
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Agustín Valverde Granja: Facultad de Ingeniería, Universidad de Ibagué, Ibagué 730001, Colombia
Teófilo Miguel De Souza: School of Engineering, Universidade Estadual Paulista (UNESP) Câmpus Guaratinguetá, Guaratinguetá 01049-010, Brazil
Pedro Magalhães Sobrinho: School of Engineering, Universidade Estadual Paulista (UNESP) Câmpus Guaratinguetá, Guaratinguetá 01049-010, Brazil
Daniel Felipe Arévalo Santos: Facultad de Ingeniería, Universidad de Ibagué, Ibagué 730001, Colombia

Energies, 2018, vol. 11, issue 6, 1-19

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.

Keywords: solar energy; experimental network; power quality; low voltage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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