Interpolation and Resampling Accuracy in the Processing of Input Data for Short-term Dispatching of Large Power Systems

This paper analyzes interpolation and resampling accuracy in the processing of input data for short-term dispatching in large power systems. Simplified pre-processing techniques of different level of approximation are considered. A comprehensive problem definition in proper analytical terms is given together with the expression of different interpolation and resampling techniques. Some numerical experiments on real data, constituted by power demand relative to a part of the Italian electrical transmission system give a quantitative idea of the effects of different possible approximations that can be utilized.