A grounding grid establishment method based on bim model

Abstract

The invention discloses a method for establishing a grounding grid based on BIM (building information modeling), which comprises the steps of building a power system model based on BIM, and acquiring electrical characteristic parameters of each electrical device in the power system model; (2) calculating the maximum single-phase short circuit current of all electrical connection points; (3) acquiring construction information of the grounding grid; (4) calculating allowable contact voltage and allowable step voltage; (5) calculating ground potential, contact voltage and step voltage, acquiring a reasonable grounding grid if the ground potential, the contact voltage and the step voltage are all less than corresponding allowable values, and if not, carrying out a step (6); and (6) modifying the construction information of the grounding grid, and repeating the steps (4)-(5) until a reasonable grounding grid is established. The method disclosed by the invention carries out an electric power design while performing a building design, improves the flexibility and the accuracy in design of the grounding grid, and reduces the engineering cost.

Description

technical field [0001] The invention relates to the field of electrical equipment safety, in particular to a method for establishing a grounding grid based on a BIM model. Background technique [0002] BIM is the abbreviation of Building Information Modeling. It is generally translated into building information model in Chinese. It uses digital information to simulate the real information of the building. Through digital technology, a virtual building is established in the computer. A building information model provides a single , a complete, consistent and logical building information base. [0003] The core of BIM technology is to use computers to build a database of building information. The database not only contains the architect's design information, but also covers the whole process information of the building from design to construction and use, and even the end of the use cycle. The three-dimensional model is established, that is, when the user actually views the i...

AI Technical Summary

Problems solved by technology

[0005] The most intuitive difference between electrical safety design and architectural design is that electrical safety design expresses the entire electrical system in the form of a two-dimensional single-line diagram, while BIM-based architectural design expresses the entire building model in the form of a three-dimensional diagram. The design mode in which design and architectural design are separated from each other leads to a lot of repeated work in the construction process of the two models, which makes the project cost high, the cycle is long, and disputes often arise due to model inconsistencies. Therefore, it is necessary to integrate electrical safety design with architectural design. Unify design and improve engineering efficiency

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