Method and device for calculating available transmission capacity of power system, medium and equipment

The invention discloses an electric power system available power transmission capacity calculation method and device, a medium and equipment, and the method comprises the steps: obtaining the upper and lower limit values of the available power of a new energy power generation unit according to the historical power transmission data of a new energy power generation system, constructing a robust optimization constraint condition of the initial economic dispatching model based on the upper and lower limit values of the available power of the new energy generator set to obtain a target economic dispatching model, and taking the target economic dispatching model as a lower-layer model in the available transmission capacity double-layer optimization model; constructing an upper-layer model in the available power transmission capacity double-layer optimization model, converting the available power transmission capacity double-layer optimization model into an available power transmission capacity single-layer model b