Method for monitoring and evaluating corrosion state of grounding grid

The invention relates to the technical field of electric power safety protection, in particular to a grounding grid corrosion state monitoring and evaluating method, which comprises the following steps: acquiring a soil environment pH value of a grounding grid area; acquiring the soil Cl ion concentration of the grounding grid area; acquiring the corrosion potential of the grounding grid area; acquiring the corrosion rate of the grounding grid area; and judging the corrosion state of the grounding grid according to the soil resistivity, the soil environment pH value, the soil Cl ion concentration, the corrosion potential and the corrosion rate. Therefore, by introducing judgment parameters of the soil resistivity, the soil environment pH value and the soil Cl ion concentration, the corrosion state of the grounding grid can be judged and evaluated more accurately, the operation safety and the service life of the substation grounding grid can be evaluated more effectively, and technical support is provided for