Research on Optimization Algorithm for Defect Diagnosis of Substation Grounding Grid

The methods for defect detecting and existing problems of the grounding grid are introduced,an innovative diagnosis method is presented,which can be applied in defect diagnosis of grounding grid.The diagnosis method builds nonlinear and overdetermined optimization mathematical model,imports improved probability search algorithm,combines the classical optimizatinn algorithm with modern probability search optimization algorithm,finally,effectively solves the problems of large tolerance,multiple fault,nonlinearity,multiple solubility and morbidity.A lot of simulation calculations,simulation of grounding grid experiments and on-the-spot tests show that the new method is effective and feasible.