Análise de produtividade de usinas solares fotovoltaicas no agreste pernambucano a partir de dados medidos

Abstract

There are several studies that deal with the performance of photovoltaic solar plants, indicating that these, present losses of various natures and that over their time of operation, these losses can compromise the performance of the plants. Knowing this, it is clear the importance of monitoring the performance of photovoltaic systems and for this, there are methodologies aimed at this application, one of the most common is the use of the Yield indicator (system productivity or energy yield). The objective of this work is to make a Yield analysis of 31 solar plants installed in 7 cities in the Agreste region of Pernambuco. This analysis included the survey of technical data and configuration of solar plants, power generation data measured through photovoltaic inverters and making a map to locate and group the systems. The map was developed in QGIS, a free program. With the yield analysis of the 31 solar plants, it was verified that the percentage difference of yield values between solar plants of the same group is between 78% and 99% in relation to the maximum observed value. Taking into account the Yield in all cities, there is a percentage difference of 76.35% between the maximum value found (4.80 kWh/kWp) and the minimum value (3.66 kWh/kWp). Thus, the results prove the importance of working with Yield, because it allows analyzing the performance of the operation of plants, by comparing systems installed in the same locality.