Power grid risk detection method, device and equipment

The invention discloses a power grid risk detection method, device and equipment, and the method comprises the steps: obtaining power grid information, and constructing a power grid matrix according to the power grid information; when a power failure line list is obtained, screening the power grid matrix according to the power failure line list, and determining an affected transformer substation matrix and a power-on line matrix; constructing a power grid risk matrix by adopting the affected transformer substation matrix and the electrified circuit matrix; respectively calculating a matrix column sum value of each matrix column in the power grid risk matrix, and selecting a voltage loss matrix element according to a comparison result of each matrix column sum value and a preset voltage loss threshold value; and determining the risk level of the corresponding power transmission line and generating a risk power transmission line list based on the number of matrix elements corresponding to the no-voltage matrix