With the development of intelligent technology, intelligent technology has been widely used in many fields, and the National Power System is one of them. The highly intelligent power grid system has brought about the improvement of power grid management and service quality, and the smart power grid has become the future development trend. The application of smart grid is very extensive, but its high technical requirements and huge cost have also become one of the important issues that electric power companies pay attention to. At present, the development prospects of smart grids are very optimistic. Various developed countries are trying to speed up the construction of smart grid markets. For example, the United States proposed smart grids to promote domestic economic growth, and EU countries formulated strategic plans for super grids. The ultimate goal is to drive the entire system economy. development of. Smart grid has been proposed in our country for many years, and the country attaches great importance to its development and construction. The "Twelfth Five-Year Plan" puts forward a new plan for the comprehensive construction of smart grids, and implements a rolling adjustment system to the plan. The plan pointed out that my country's total investment in the State Grid in 2020 is 3.45 trillion yuan, of which 384.1 billion yuan will be invested in smart grids. Before 2015 is a period of comprehensive construction of the national smart grid, 2016-2020 is a period of comprehensive improvement of the smart grid, and the modernization level of the smart grid will reach the international advanced level. Subsequently, my country will continue to transform the smart grid to thoroughly realize the goal of a national smart grid.