Abstract
The study of soil erosion in grounding grids is of great significance for ensuring the safe operation of power system. Through on-site testing of the influencing factors of soil erosion in the grounding grid of substations on 12 different regions of the country, the principal component analysis method was used to determine the correlationthe soil corrosion factors and the corrosion rate of the buried test strips, and establish a comprehensive evaluation model for multiple indicators of soil corrosion in grounding grids. Research indicates, conductivity, Cl−, SO42−, K+and Na+are the key influencing factors of soil corrosion in the tested substation, and the corrosion score results that based on the proposed evaluation model are in good agreement with the corrosion rate of the buried test strips, so the comprehensive evaluation model of soil corrosivity indicators was successfully in the application of soil erosion studies and soil environmental assessment.
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