The invention relates to a three-dimensional integrated model of an intelligent substation and belongs to the technical field of digitization of intelligent substations. According to the three-dimensional integrated model of the intelligent substation, a programming language special for editing a Shader code is introduced into DirectX9 for programming, a visual three-dimensional model is established, the process of converting a three-dimensional space and a two-dimensional drawing in the mind of a designer is omitted, and the efficiency is improved; a collision detecting module, a safety distance checking module, a three-dimensional image extracting module, an electrical computing module, a lightning protection designing module and a sheet generating module are established through a three-dimensional integrated technology, real-time collision detection and on-line distance detection are achieved, problems can be found as soon as possible, a more reasonable design scheme is made, the number of design change times is reduced, and therefore the construction efficiency is improved indirectly.