PERFORMANCE ANALYSIS THROUGH THE PERFORMANCE RATIO OF PHOTOVOLTAIC PLANTS IN THE SAME LATITUDE
DOI:
https://doi.org/10.59627/cbens.2022.1169Keywords:
Solar Energy, Performance PV Systems, Performance RatioAbstract
With the exponential growth of photovoltaic systems (FV) worldwide, a performance analysis has become a significant tool to maximize the generated electricity. In the literature, the Performance Ratio (PR) is the most used indicator, as a contractual condition or guarantee in the commissioning of PV systems, as a way of evaluating the yield and as a global performance in the forecast of generation in PV plants that participate in auctions of electrical systems in the medium and short term. In this study, three plants FV were analysed, from January/21 to December/21, they are in Pesqueira-PE with characteristics of similar, two with modules with polycrystalline silicon technology and one with monocrystalline silicon technology, from different manufacturers and different power loss rate by temperature. The PR was calculated using the IEC 61724 and National Renewable Energy Laboratory (NREL) methods, which consider the conditions at the study site, adding the cell temperature to the equation. The minimum value of PR occurred in the month of January because is the month with highest annual ambient temperature; Regarding the highest PR, each plant presented a value and in different months, possibly due to the characteristics of each installation. The B plant with monocrystalline silicon technology modules presented PR small than the plants with polycrystalline silicon modules. In addition, the parameter showed no sensitivity to the operating time of the system, as the C plant with six years of use resulted in values of the PR like those with two years of activity. The value of PR is biggest in the colder months, because the temperature influence in the performance of PV systems.
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