In order to overcome the limitations in voltage stability of the centralized model predictive control,a cooperatively-distributed model predictive control method based on the system partition and the predictive control modeldecomposition of voltage is constructed for large-scale power systems. In this method,a global objective cost functionis proposed with the convex combination of the objective functions of all subareas,the nodal voltage trajectory is predictedaccording to the trajectory sensitivity,and the objective cost function is transformed into a quadratic programmingfunction relevant to all control variables,thus avoiding the optimization conflicts among the subareas.Simulationson two test systems indicate that the proposed method greatly improves the calculation efficiency and achieves avoltage control performance similar to that of the centralized model predictive control.