A New Optimization Algorithm for Grounding Grid Fault Diagnosis

The grounding grid is commonly installed in the substation. When it’s damaged, restoring and improving work not only affects the production, but also it is difficult to carry it out. In this paper, by using integrated translation and iterative method, we establish a new optimization model of quadratic programming with constraints. By solving the model, we can obtain the resistance of each branch. After comparing with the initial value, we know more precisely the corrosion of the grounding grid than ever. The results of the calculations, the measurements in practical examples show that the proposed method is feasible.