Research on Corrosion Fault Diagnosis of Grounding Grid Based on MIDBO Algorithm

The grounding grid is essential for the substation to ensure the safe and stable operation of the power system. At present, the main fault diagnosis method, the theoretical method of electrical network, has some problems, such as few accessible nodes, underdetermined model equations, and poor algorithm convergence. In this paper, a multi-strategy improved dung beetle optimization algorithm is proposed, which is used to solve the equations of the fault diagnosis model of the grounding grid, by adding three strategies: improved individual acceptance of the optimal solution, sparrow optimization following mechanism perturbation and Cauchygoss variation. Through the iterative calculation of the simulation model of a substation grounding grid and the comparison with other algorithms, it is proved that the method has the superiority in solving accuracy and speed, and has a good engineering application prospect.