Abstract: The advanced development of Energy Internet and information gathering technology brings higher request for operation security and stability as well as intelligent defense and control of large power grids. As a result, the online security defense support system need to be developed and built accordingly. Firstly this article commended on current development and demand in the field of bulk power system safely controlled technology. The idea was proposed of establishing an information-driven panoramic security defense. Its concept, construction goal, multi dimensional collaboration control concept and multi-level interactive cooperative control principle were described in detail. Secondly, concentrating on information flow controlled energy flow, the closed-loop control and service levels and infrastructure were designed, the main functions of each link were made clear. Based on this, the theoretical structure was systematically developed of information driven global security defense. The relating basic theory and key technologies were interpreted. Finally, the implementation route of the system was presented, in hope of realizing multi-dimensional and three-dimensional security defense as well as quantitative assessment and effective control of large power grids under operation environment and by means of advanced big data technology.