Solar Irradiance Forecasting Using Dynamic Ensemble Selection
Domingos S. de O. Santos; Paulo S. G. de Mattos Neto; João F. L. de Oliveira; Hugo Valadares Siqueira; Tathiana Mikamura Barchi; Aranildo R. Lima; Francisco Madeiro; Douglas A. P. Dantas; Attilio Converti; Alex C. Pereira; José Bione de Melo Filho; Manoel H. N. Marinho
Solar irradiance forecasting has been an essential topic in renewable energy generation. Forecasting is an important task because it can improve the planning and operation of photovoltaic systems, resulting in economic advantages. Traditionally, single models are employed in this task. However, issues regarding the selection of an inappropriate model, misspecification, or the presence of random fluctuations in the solar irradiance series can result in this approach underperforming. This paper proposes a heterogeneous ensemble dynamic selection model, named HetDS, to forecast solar irradiance. For each unseen test pattern, HetDS chooses the most suitable forecasting model based on a pool of seven well-known literature methods: ARIMA, support vector regression (SVR), multilayer perceptron neural network (MLP), extreme learning machine (ELM), deep belief network (DBN), random forest (RF), and gradient boosting (GB). The experimental evaluation was performed with four data sets of hourly solar irradiance measurements in Brazil. The proposed model attained an overall accuracy that is superior to the single models in terms of five well-known error metrics.
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