Cost Estimation Method of 220KV Transmission and Transformation Project Based on 3D Information Model

In order to improve the accuracy and efficiency of cost estimation for 220kV power transmission and transformation projects, this study carried out the design of cost estimation method for 220kV power transmission and transformation projects based on three-dimensional information model. Based on BIM technology and IFC standard, this method first establishes a solid engineering model based on the physical information of power transmission and transformation engineering, and completes the construction of a three-dimensional information model of 220kV power transmission and transformation engineering according to the hierarchical structure design of mechanical information and control information in the model. Then, based on this, the project cost is estimated based on linear regression method. Finally, the progressiveness of this method is proved by experiments. The experimental results show that the proposed method has high estimation accuracy, short estimation time, good application effect, and can be further popularized.