Abstract: In this paper, an engineering model method is proposed for calculating lightning induced overvoltage based on a MODELS language. It is used to model the lightning channel and analyze the electromagnetic coupling with the overhead lines, and is implemented and verified in ATP/EMTP. Considering the influence of the consumed ground surface on the radial electric field, this method can build the induced lightning model suitable for the distribution network transmission lines and overhead lines. It adapts the analytical method to calculate the lightning induced voltage of the lines, and then analyzes the influence of the overhead lines with the induced voltage. Combined with the actual situation of distribution lines in South China power grid, the distribution of lightning induced over-voltage and induced current in low-voltage system with and without overhead ground wires are given, so is the calculation results of its lightning resistance level. The bearing capacity of the lines and their possible electromagnetic interference and influence range are discussed. The role of the overhead line configuration in the system is studied. The results show that the overhead ground wires can greatly improve the lightning resistance level of the distribution lines to induce lightning and reduce the flashover probability. The model is verified to be able to be well applied to the lightning protection of the distribution lines.