Zusammenfassung
The main concern of the present paper is to present and to analyse
two procedures for modelling daily global solar radiation. The first
one uses the clearness index techniques and the second one uses a
totally different type of approach for taking in consideration important
properties of such data, including non-Gaussian shape and non-stationarity.
This procedure uses the difference between the extraterrestrial and
the observed daily global radiation denoted âlost solar componentâ.
Both procedures are based on higher order statistics for generating
the global solar radiation using mainly a random process. The prediction
results show that the sequences of values generated have the same
statistical characteristics as those of sequences observed. The comparison
between the two methods used indicates that the developed model based
on the âlost solar componentâ is better than the model obtained
using the conventional procedure based on the clearness index.
Nutzer