POWER-STATION POWER SYSTEM AND METHOD FOR CONTROLLING POWER OF POWER-STATION POWER SYSTEM

This application provides a power-station power system, and a method for controlling power of the power-station power system. The power-station power system includes a power-station controller, a power-station voltage transformer unit, direct-current conversion units, and inverter units. Alternating-current ends of the inverter units are coupled with and connected in parallel to the power-station voltage transformer unit. A direct-current end of any inverter unit is coupled with maximum power point tracking MPPT controllers of the plurality of direct-current conversion units. The power-station controller obtains, based on an active capacity of each inverter unit and a reactive capacity of each inverter unit that are obtained by target MPPT controllers coupled with each inverter unit, an active capacity of a power station and a reactive capacity of the power station. The power-station controller performs, based on the active capacity of the power station, target active power of the power station, the reactive capacity of the power station, and/or target reactive capacity of the power station, reactive power control on each inverter unit and active power control on other MPPT controllers except the target MPPT controllers in the plurality of MPPT controllers. In this application, power control precision can be improved, and reliability is high.