Abstract:Distribution lines are widely distributed and there are many branches. Based on economic and practical factors, overvoltage monitoring devices can not achieve full coverage monitoring on distribution lines. In order to realize the effective monitoring of lightning parameters in the area where the distribution line is located by the on-line overvoltage monitoring device, so as to obtain more accurate lightning monitoring information on the distribution line, and then analyze and obtain the lightning parameters information, under the existing conditions of lightning related parameters of the line, combining the data collected by the lightning location system and the lightning trip-out rate of the distribution line, a different work is proposed. The method of selecting the locations of over-voltage monitoring devices installed on distribution lines under range conditions. This method considers different factors under different engineering conditions, and through quantitative calculation, realizes the numerical calculation of the importance of installing overvoltage monitoring devices in distribution lines, effectively determines the distribution points of overvoltage monitoring devices, thus realizes more accurate monitoring of lightning parameters, and provides data basis for further realizing the evaluation of line lightning resistance level and improvement of line lightning protection design.