【摘要】 在变电站地网接地电阻的数值计算中，一般处理过程是先求出每个单元的泄漏电流，由此得出总的泄漏电流，进而得到地网接地电阻。本文提出了一种新的计算方法，通过矩阵变换直接求取接地电阻，不必先求单元泄漏电流，从而节省了计算时间，并提高了计算精度，这种方法对均匀土壤及不均匀土壤均适用。更多还原

【Abstract】 In the numerical algorithm of the calculation of substation grounding grids resistance, the conventional procedure is to first calculate the fault current of every element and then obtain the total fault current of the grid and achieve the grid resistance. This paper presents a new method to calculate the grounding grid resistance. Through alternating the resistance coefficient matrix directly to acquire the resistance of ground grids, it is unnecessary to calculate the element fault current. As a result, the computing time can be shortened and precision improved. This method is valid for both uniform and non uniform soil models.更多还原