Abstract:The grounding of the shell of power equipment is an important guarantee for the safe operation of the power system, which can not only reduce the insulation level of electrical equipment, protect the grounding, prevent electrostatic interference, detect grounding faults, and prevent electromagnetic interference, but also safely carry out functional grounding, equipotential connection, and working grounding in the power system. At present, the electric grounding device is generally installed on the underground and the equipment framework, and is buried in the soil or exposed to the atmospheric environment all the year round, and the operating environment is harsh, and it is very easy to corrode, and once the grounding device is corroded, it will cause its grounding resistance to increase and thus cause its conductivity to decrease, and even cause the grounding device to break and fail when the corrosion is serious. This paper mainly analyzes the main reasons for the breakage of grounding flat irons, proposes targeted solutions and implements them in the field, so as to ensure the reliable grounding of power equipment shells and ensure the safe and stable operation of power grids.