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Aplicação do Método dos Mínimos Quadrados para o ajuste da curva de potência de um aerogerador de pequeno porte

2020; INSTITUTO FEDERAL DO RIO GRANDE DO SUL; Volume: 6; Issue: 1 Linguagem: Inglês

10.35819/remat2020v6i1id3492

2447-2689

Camila e Silva Gomes, Nísia Krusche, Javier García López,

Wind Energy Research and Development

With the development of the wind industry and the need of generating electricity, wind turbines are being installed in several locations. In each installation environment certain peculiarities are observed, which do necessary to model the relationship between the wind speed and the power generated by the wind turbine, in order to predict correctly the energy production in any environment. In this paper, a proposal was made, based on data collected by a wind generator in June 2017, to find a polynomial representation for the power curve of a specific wind turbine model, using a curve fitting method. The representation obtained was validated with the daily results collected and with the wind turbine power curve obtained which presented satisfactory results. In The 14929 data recorded per minute by the wind turbine during a month, the Least Squares Method was applied, using a grade 3 in these polynomial as base. The objective of this paper is to find a polynomial that adequately represents the power curve of a small wind turbine. Once this polynomial was found, the level of correlation and significance was evaluated to compare the polynomial found with experimental data collected over 30 days and the power curve of the polynomial. The results obtained are satisfactory for the cases in which the experiments allowed us to collect useful data for more than 2 consecutive hours.