A CRO-species optimization scheme for robust global solar radiation statistical downscaling

作者：Salcedo Sanz S; Jimenez Fernandez S^*; Aybar Ruiz A; Casanova Mateo C; Sanz Justo J; Garcia Herrera R

来源：Renewable Energy, 2017, 111: 63-76.

DOI：10.1016/j.renene.2017.03.079

• Coral reefs optimization algorithm
• CRO with species
• Global solar radiation
• Solar energy
• Extreme learning machines

This paper tackles the prediction of the global solar radiation (GSR) at a given point, using as predictive variables the outputs of a numerical weather model (the WRF meso-scale model) obtained at a different grid points. Prediction is obtained in this work using a Multilayer Perceptron (MLP) trained with Extreme Learning Machines (ELMS). Provided that the number of WRF outputs is vast, we propose the use of a Coral Reefs Optimization algorithm with species (CRO-SP) to obtain a reduced number of significant predictive variables, therefore improving the global solar radiation prediction attained without feature selection. The proposed system has been tested on real data from a radiometric station located at Toledo (Spain) and average best results of RMSE of 69.19 W/m(2) have been achieved, resulting in a 21.62% improvement over the average prediction without considering the CRO-SP for the feature selection.

• 出版日期2017-10