Novel power system flexibility improvement energy storage method considering source load uncertainty

The invention discloses a novel power system flexibility improvement energy storage method considering source load uncertainty, and the method is characterized in that the method comprises the steps: building an energy storage charging and discharging model through the original energy storage of an energy storage system, the power supplied to a power system when the energy storage system discharges at any time, and the power absorbed to the power system when the energy storage system charges at any time; evaluating the flexibility of the power system; establishing constraint conditions according to the constraint of the new energy power generation ratio, the constraint of the power supply adequacy of the power system, the constraint of power generation and load balance, the constraint of energy storage charging and discharging and the constraint of power generation of the thermal power generating unit; establishing constraint conditions of wind power, photovoltaic and load uncertainty; and according to all th