PVF-package: Forecast of AC Power Produced by Grid-Connected PV Systems

In iesiee/PVF: Forecast of Power and Ramps Produced by Grid-Connected PV Systems

Forecast of AC Power Produced by Grid-Connected PV Systems

Description

This package implements methods for forecasting the AC power output of a PV following a nonparametric approach. It uses as inputs several forecasts of meteorological variables from a Numerical Weather Forecast model, and actual AC power measurements of PV plants. It uses Quantile Regression Forests as the machine learning tool to generate forecasts with a confidence interval.

Details

The package includes 4 main functions:

• rfPredict uses Quantile Regression Forests to predict the median and the quantiles 0.1 and 0.9, using a training set with predictors and past measurements.

• predictPac uses rfPredict with a certain scenario (combination of predictors extracted from a Numerical Weather Prediction model) to produce a forecast for a defined day. The days included in the training set can be chosen with three different methods (days immediately before the day to be predicted, according to the absolute difference between clearness indexes, or according to the similarity between empirical distribution functions of irradiance)

• rfScenario uses predictPac to produce a forecast for every day included in the training set. This function is useful to asses the performance of a certain scenario and method of days selection.

• predVarsLocal and extractForecast use the functions of the meteoForecast package to build a time series with one or more Numerical Weather Prediction variables from a specified remote source for a time period at a defined location. Each variable is quantified with the value at the location, a spatial interpolation using nearby locations, three spatial variability indexes (tri, tpi and rough) and one time variabiliy index.

Author(s)

Marcelo Pinho Almeida and Oscar Perpinan Lamigueiro

Maintainer: Oscar Perpinan Lamigueiro <[e-mail]>

References

Meinshausen, N. (2006). Quantile regression forests. The Journal of Machine Learning Research, 7, 983-999.

Pinho Almeida, M., Perpiñán Lamigueiro, O., and Narvarte L., PV Power Forecast Using a Nonparametric Model, Solar Energy (under review)

See Also

meteoForecast-package, quantregForest, raster-package, zoo, calcSol

iesiee/PVF documentation built on June 10, 2025, 12:48 a.m.