Characterization of grid-connected photovoltaic systems in Curitiba, Brazil

Abstract

In the search for new options for the establishment of the energy matrix of Brazil, the Grid-Connected Photovoltaic Systems (GCPVS) are configured as an alternative to urban centers, because they allow the power generation at distributed mode, that is, generate energy at the place where it will be consumed and inject the surplus energy into the network. Faced with the prospect of installing Grid-Connected Photovoltaic System, the objective of this research is to characterize this type of photovoltaic system installed in Curitiba, State of Paraná, Brazil. This paper highlights that up to July 2017 the State of Paraná has 1031 GCPVS in operation, which corresponds to 6,6MW, while Curitiba has 204 GCPVS that represents 997.4 kW in operation, 82% of which are installed in residences. In addition, the study of a sample of 41 GCPVSs installed in Curitiba shows that 98% of these systems use multicrystalline modules, 75% use single phase inverters and 95% of these use inverters transformerless. This shows that the losses in the conversion process are reduced and the equipment is more compact using better technology than the inverters with transformer. Therefore, the main trend of photovoltaic energy market is to use transformerless inverters.

Mapping and Characterization of the Grid-connected Photovoltaic Systems in the City of Curitiba: Preliminary Results

“…A greater availability of investment resources for commercial and industrial consumers also justifies the higher power on PV systems installed in these industries. A deeper study of the technical characterization of the grid-connected photovoltaic systems in the city of Curitiba [4] points out the predominance of PV systems with Polycrystalline Silicon modules, which have an efficiency of 13% to 16.5% [12]. These values are in agreement with the calculated Average Efficiency of the PV systems, which is 14.73%.…”

“…Studies of the National Energy Plan (NEP) 2050, prepared by the Energy Research Company (EPE), estimate that 18% of homes in 2050 will have photovoltaic generation, which will supply 13% of residential consumption [3]. These projections are corroborated by studies [4] that have already technically confirmed the applicability of distributed PV generation in urban environments. From the point of view of photovoltaic generation potential, Brazil and, more specifically the state of Paraná, have Annual Irradiation and Total Productivity values significantly higher than those obtained in European countries such as Germany, Italy and Spain, which together represent 54% of the installed power of photovoltaic energy in the world [5] [6].…”

Generation of Photovoltaic Solar Energy. Evaluation of the Demand Curve with the Insert of Grid-connected Photovoltaic Power System at CINDACTA II, Curitiba-PR, Brazil.

“…There are two types of this system, the Photovoltaic (PV) off-Grid System and the Photovoltaic (PV) on-Grid System that can be used in buildings. However, it is emphasized that, if the site is serviced by an electric utility, due to the absence of batteries in the PV on-Grid Systems, all the energy produced by the modules is used, thus giving it high productivity 10 . The data of solar irradiation for the accomplishment of this study were taken from the Brazilian Atlas of Solar Energy, and are made available in spreadsheets with intercompared data in points that are not more than 10 km apart.…”

Perspectivas da geração e aplicação da energia solar fotovoltaica no Brasil: uma revisão da literatura (2015-2019)

“…residências familiares onde se encontra 78% do total de paneis fotovoltaicos da cidade com 52% da potência total instalada. Os autores ressaltam que os sistemas residenciais possuem uma potência média de 2,97 kW, já os sistemas comerciais e industriais têm uma potência média de 9,48 kW e 9,69 kW respectivamente Tonin et al (2018). ao realizar uma caracterização dos sistemas fotovoltaicos conectado à rede em Curitiba (…”