Análise de desempenho e perdas energéticas por desalinhamento de guinada em aerogeradores no Nordeste Brasileiro: um estudo de caso com dados SCADA

Abstract

The growing participation of wind energy in the Brazilian energy matrix makes operational efficiency essential for the competitiveness and sustainability of the sector. Yaw system misalignmentis a critical factor for underperformance in wind turbines, causing significant energy losses. Thiswork aimed to analyze and quantify the technical and economic impacts of yaw misalignmentbased on real data from the SCADA system. A quantitative case study was conducted with threeVestas V150 wind turbines located in the Northeast region of Brazil. The methodology includedtime series analysis to identify misalignment periods and comparison between measured andtheoretical power curves for loss quantification. The results showed an energy performancereduction of up to 80.5% compared to the expected, totaling 1,038.82 MWh of lost energy. Onlyone of the turbines was responsible for 68% of the total losses due to the long period of misaligned operation. In economic terms, these losses represent a significant financial impact, directlyaffecting project profitability and investment viability. The study proves that yaw misalignment isa significant source of operational and financial underperformance, highlighting the importanceof implementing continuous SCADA-based monitoring systems for early fault detection andeffective mitigation of technical-economic losses in wind farms.