Method for judging emergency capacity of operating point of electric power system in extreme weather

The invention discloses a method for judging the emergency capacity of an operation point of a power system in extreme weather, and the method comprises the steps: determining a time sequence fault scene set of all extreme weather periods, and converting the time sequence fault scene set into a corresponding code matrix; according to the network parameters, the generator set parameters and the code matrix, constructing a security domain model of the corresponding power system during the extreme weather; the security domain comprises a set of all feasible operating points of the power system during extreme weather; based on the security domain model, a corresponding operation point discrimination model is obtained, and the operation point discrimination model is used for determining whether the operation point is in the security domain so as to have the emergency capability of the power system in extreme weather; and solving the operating point judgment model, and judging whether the operating point has the em