A wide-scale power outrage is a loss of electric power with low probability but dangerous such that it causes great economical and social damage. The power system disintegration resulting in wide-scale power blackouts is a complex phenomenon brought about by different causes. The disintegration of a power system results from a process of separating or losing electric lines or generation units, which happens continuously until it completely divides into isolated regions or areas. The underlying causes derive from the stage of planning, designi'ng, operating, or maintaining, which lead to dangerous wide-scale power outrages. However, for many different reasons, both subjectively and objectively, the investigation of the causes, mechanisms and phenomena bringing about the widesclae power outrages was not taken into consideration.