Application of improved discrete grey model in medium-long term power load forecasting

Discrete grey model(DGM) is introduced into the field of power load forecasting to solve the problem of load fast increase causing forecasting results error.Based on the reseach of the initial value sensitivity and the data pretreatment,the improved DGM is proposed in this paper.The DGM(1,1) and the improved DGM(1,1) are applied in the medium-long term load forecasting for some typical practical examples.The forecasting results show that the DGM is applicable,and the improved DGM has higher forecasting accuracy.