Electric power system short term load forecasting is not only the basis for the scheduling of generating sets, but also the basis to work out the transaction schedule in electricity market. It has great influence on the operating, controlling and planning of electric power system. Due to the complicacy and uncertainty of load forecasting, electric power load is difficult to be forecasted precisely. In order to improve the precision of electric power system short term load forecasting, according tothe features of power load and considering the combined influence of historical load data, weather...