Abstract

Grey model is a common method in medium and long-term power load forecasting, but it has great limitations. According to the characteristics of medium and long term power load forecasting, the method of sliding average and the principle of Markov model are introduced into the Grey forecasting theory, and the model is improved. This improvement can effectively improve the prediction accuracy of the model. Based on the load data of Qingdao City in the past ten years, it can be proved that the improved Grey model has improved the accuracy of the former.

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