Analysis of Factors Influencing Grounding Resistance

The grounding resistance affects the personnel safety of the operators and the normal operation of the equipment.The effects ofQ(the resistivity of the soil),L(the length of grounding electrode),S(the cross-sectional area of grounding electrode),b(the buried depth of grounding electrode) and c(the concentration of the resistance reducing agent) on R(grounding resistance) are analyzed.The result shows that the resistivity of the soil and the resistance reducing agent largely affects the grounding resistance and other factors influence the grounding resistance just in a certain range.