Method and system for measuring and calculating reasonable energy storage scale matched with new energy power station of power system

The invention discloses a power system new energy power station matched energy storage reasonable scale calculation method and system, and the method comprises the steps: carrying out the hour-level production simulation with the lowest operation cost as an objective function for a target power system, and calculating the total new energy annual energy output and energy storage power consumption of the target power system; carrying out production simulation on the target power system comprising the incremental new energy power station, measuring and calculating the total new energy annual energy output and the energy storage loss power consumption of the target power system, and calculating the true cost per kilowatt-hour of the incremental new energy power station; a unit energy storage scale is given, annual cost converted by total investment and operation maintenance cost is calculated, and different energy storage scale sequences are obtained through sorting from small to large; and performing production