I. Introduction
Electric power is the material basis for social and economic development, people’s daily life and all walks of life. The development of electric power has provided strong material support for China’s sustained and rapid economic growth; On the contrary, the sustainable development of economy can promote the development of power industry [1], [2]. The shortage of electric power will seriously restrict the sustainable and healthy development of economy. Because electricity is different from other energy sources, it cannot be stored and has no inventory, which can truly reflect the operation status of social economy. Therefore, the demand and supply of electricity for economic development often become the wind vane of social and economic development [3], it is important to study the impact of economic development on electric demand prediction.