In accordance with the goal of building a unified national grid company strong and intelligent grid requirements for the practical needs of network engineering and design work and finish construction of three-dimensional design system for intelligent substation. While retaining the traditional design of planar projection based on the parallel use of three-dimensional drawing tools, using refined design, for security checking interval, the wire mechanics, lighting, materials of statistics, Achieving intelligent substation digital transfer, and lay the Foundation for the whole project life-cycle management.