Safety and stability analysis method for access of intermittent large-scale wind power to grid

The invention discloses a safety and stability analysis method for access of intermittent large-scale wind power to grid. The steps of the safety and stability analysis method for the access of the intermittent large-scale wind power to the grid include that: (1) effect factors of the grid safety and stability are confirmed; (2) the effect factors are selected; (3) parameters are set, a mold is built, a stability analysis is conducted; (4) whether a result is in a stable state or not is judged, if yes, a step (5) is conducted, otherwise the step (3) is re-conducted to modify the parameters, and a stability analysis is conducted again; (5) according to the set parameters and model, intermittent large-scale wind power are accessed to the grid. According to the safety and stability analysis method for the access of the intermittent large-scale wind power to the grid, full consideration is given to the fact that the system analysis of the access of a wind power station causes adverse effects on normal operation of the grid because win power as a power source has the characteristics of intermittency and difficulty in controlling. The defects that the intermittence is not considered by a safety and stability study of a traditional fire motor accessing into the grid, and only the continuity is considered are overcome, and technical support is provided for the development of wind large-scale combining to the grid.