The invention discloses a wide-area power generation control system for a flexible DC power grid pumped storage power station, comprising a superior power grid dispatching platform, a transmitting endconverter station, a regulating converter station, a pumped storage power station, a receiving end converter station (Beijing) and a hydroelectric generating set governor, wherein the superior powergrid dispatching platform is provided with a wide-area power generation control main station; the pumped storage power station is internally provided with an execution substation; the main station serves as main data analysis; the pumped storage power station has functions of active power adjustment command release and has different control modes; the substation is used to receive the active poweradjustment command of the pumped storage power station released by the main station and issue an actual execution command to the governor of each set according to the real-time operation condition inthe pumped storage power station. Through calculating and measuring the real-time output of the new energy power generation accessed to the flexible DC power grid, the power output of the pumped storage power station connected to the flexible DC power grid is adjusted for realizing optimal operation, the complementary advantages of combined power generation of wind/photovoltaics and pumped storage are made full use of, wide-area power generation control of the flexible DC power grid is realized, the minute-level fluctuation characteristics of wind power and photovoltaic power generation can be effectively leveled, and friendly delivery is realized.