Harmonic Distortion Analysis in a Low Voltage Grid-Connected Photovoltaic System

After the approval of the Normative Resolution 482, in April 17th, 2012, ANEEL has established the general conditions for microgeneration (less than or equal to 100 kW) and minigeration (greater than 100 kW and less than or equal to 1 MW), accessing the electric power distribution systems. In addition, it is established the net metering compensation system of the electric power generated. Since then, several applications for grants for connecting PV systems to the low and medium voltage grid have been performed. In this context, this paper presents the design of a 6.58 kWp photovoltaic system in the city of Uberlândia, Minas Gerais, following the standards established by that Normative Resolution and in accordance with the CEMIG ND 5.30, which establishes the criteria for connecting new micro and mini distributed generation systems to the low-voltage grid. Design criteria and results of the assessments about harmonic distortions at the point of common coupling of the installation are presented in this work.