According to China's energy distribution in the regional distribution characteristics of load consumption, to adapt to China's current and future social development adopted by the power grid development way, all kinds of energy, especially large-scale wind power and solar power generation electric in and out of strong adaptability, wide range, to achieve the efficient allocation of energy resources. The construction of smart grid in China has risen to the height of the national strategic level. Intelligent substation is one of the core platform of energy conversion and control of a strong power grid, prospects remain bright.