Power grid thermal stability limit checking method, device, equipment and medium

The invention relates to the technical field of power system analysis, and provides a power grid thermal stability limit checking method, device and equipment and a medium, and the method comprises the steps: obtaining power grid parameter data of a target power grid to be subjected to thermal stability limit checking; generating a preset fault set according to a preset power safety requirement, and performing preset fault scanning on the target power grid according to the preset fault set to obtain a corresponding power flow transfer coefficient and a power flow residual coefficient after a preset fault occurs; establishing a channel limit checking model, and solving the channel limit of each power transmission channel in the target power grid; establishing a formulation quota checking model, and solving the maximum power flow of the power transmission channel after the preset fault occurs; and determining a comparison result between the maximum power flow of the power transmission channel and the short-time