The invention discloses a
graphic analysis method for optimization configuration of a
lightning arrester on a 110kV / 220kV
power transmission line. The method comprises: firstly, performing ATP
simulation on a key section of the
power transmission line by adopting an electromagnetic transient
simulation program in combination with parameters of the
power transmission line and a power
transmission line tower; secondly, calculating a critical value of
lightning stroke current causing back flashover, and comparing
lightning protection effects in different
lightning arrester configuration densities before and after configuration of the
lightning arrester; and finally, visually recording a situation that the flashover occurs to the
tower in a forms mode for different
lightning arrester configuration
modes and different lightning
stroke positions, and visually observing a lightning flashover probability of the section of the line to obtain the optimization configuration of the lightning arrester on the 110kV / 220kV power
transmission line. The
graphic analysis method belongs to a statistic
analysis method for graphically analyzing a flashover situation of the
tower, is suitable for statistic analysis of lightning
stroke flashover of lines with different span lengths, different lightning stroke points and different lightning arrester configuration densities and
modes, and is visual, easy to understand, simple, clear and easy to apply and popularize.