Power grid risk assessment method and system based on situation awareness

The invention relates to the technical field of data processing, in particular to a power grid risk assessment method and system based on situation awareness, and the method comprises the steps: obtaining various power grid historical state data of each node of a power grid, each node corresponding to different regions of the power grid; obtaining a relative state characteristic value according to the difference of short-term trend changes of different types of data in the historical state data of the power grid; determining situation prediction characteristic coefficients of various power grid historical state data based on the relative state characteristic values; obtaining a risk assessment relative coefficient of each kind of power grid historical state data through the situation prediction characteristic coefficient; based on the risk assessment relative coefficient, obtaining a prediction result of each kind of power grid historical state data by adopting an exponential smoothing model; and obtaining a