The Mathematical Model and Solution Method of Ground Grid Corrosion Diagnosis

In this essay, in the view of the ground grid corrosion problem, we establish a theoretical calculation model and engineering application model based on the way changing the current injection position and multiple measuring at each position. Finally, proposing a corresponding optimization algorithm on the basis of analyzing the characteristics of the problem. There are too many redundant equations (inequality group) when we establish the model by using the method of changing the current injection position and multiple measuring at each position. We remove those redundant equations (inequality group) by using great linearly independent groups corresponding to the initial feasible solution. But the the initial feasible solution is not easy to find, we apply least square method to solve the problem. Simulation shows that the model is correct, the method is valid.