A Critical Review on Wind Turbine Power Curve Modelling Techniques and Their Applications in Wind Based Energy Systems

Table 2

Model evaluation indices.

	Expression
Absolute error (AE) [1]
Relative error (RE) [1]
Mean absolute error (MAE) [24]
Mean absolute percentage error (MAPE) [37]
Root mean square error (RMSE) [24]
-squared [38]

= number of data, = th modelled value, = th actual value, and = mean of actual value.