New Method Based on the Optimal Decomposition Scale for Daily Load Forecasting in Power System
Jian Bo Sun, Chun Yan Yi, Bu Han Zhang · Advanced materials research · 2013
The decomposition scale value is usually given by experience while the wavelet analysis method is used for daily load forecasting. Directed to the influence of decomposition scale, the paper constructed a level-termination function as SNR and put forward a constraint conditions according the accuracy requirement to solve out the optimal decomposition level. Then followed the load data which was decomposed into high and low frequency component, built up different models for different level series and sum up the forecasting result. The accuracy assessment index shows the effectiveness of the whole method and prediction thought.