Power transmission line three-dimensional model construction method for numerical calculation of lightning stroke transient process

The invention relates to the technical field of lightning stroke transient power transmission line analysis, in particular to a power transmission line three-dimensional model construction method for lightning stroke transient process numerical calculation. Comprising the following steps: dividing calculation objects into geometric and electrical elements; respectively subdividing the geometric elements and the electrical elements into a plurality of sub-elements; giving a description rule of each sub-element; describing the calculation object by using a description file in a specific format according to a rule; and the description file is called and analyzed through the computing platform, so that the three-dimensional model of the computing object is reproduced. According to the method, the description files in specific formats, which all adopt digits to represent the parameters, are designed, so that numerous element attributes of the parameters can be clearly described; when lightning stroke transient cha