Substation grounding grid ground potential distribution calculation method considering multiple metal pipes

The invention relates to a substation grounding grid ground potential distribution calculation method considering multiple metal pipes. The method takes into account mutual influence of longitudinal resistance of a number of metal pipes, the stray current of the pipes and the diffusion of a grounding grid, and calculates and analyzes the ground potential distribution of the grounding grid to acquire the comprehensive and accurate result of the ground potential distribution of the grounding grid of a substation. Compared with the prior art, the method provided by the invention has the advantages that the calculation accuracy of the ground potential distribution of the grounding grid of the substation is improved, and the calculation amount is reduced. 本发明涉及种计及多根金属管道的变电站接地网地表电位分布计算方法，该方法在考虑多根金属管道自身纵向电阻及管道杂散电流与接地网散流间互相影响的基础上，对接地网的地表电位分布进行计算分析，以得到变电站接地网地表电位分布全面、准确的结果。与现有技术相比，本发明具有提高变电站接地网地表电位分布计算的准确性、减小计算量等优点。