Abstract:Based on the international program management standards and theories, the paper used the case study method, through the discussion and analysis of the Sichuan-Tibet electricity interconnection project under the complicated condition of the plateau, and combining with the abundant experience of the power grid construction management of National grid Sichuan electric power company, and Condensed out the "Three-point and One-line" integrated management and control system, which means " to the mileage and the life cycle as the main line, the program strategy as the center. the stakeholders as the foothold, and the project support process as the support point". This management and control system is systematic, three-dimensional, holistic, and greatly enriched the theoretical system and management method of large-scale power grid construction and management for the future construction of similar projects to provide a reference.