It is expected that during the "14th Five-Year Plan" period, my country's onshore wind power and photovoltaic power will be generally parity or lower than thermal power, and low prices can be achieved in some areas. At the same time, as large-scale new energy sources are connected to the power grid, the power system needs to balance supply and demand between randomly fluctuating load demand and randomly fluctuating power supply. Its structure, operation control method, and planning and construction...