With the increasing proportion of renewable energy, mainly wind energy and photovoltaic power generation, in the power supply structure, it is difficult to adjust the power grid, which increases and causes a lot of problems of waste of renewable energy. It is very important to increase the support for a high proportion of new energy to be connected to the grid, improve the safety and reliability of the grid operation, as well as the flexible regulation ability of the power system, which is directly related to the balance and safety of power system, and can solve the problem of new energy consumption and utilization.