模拟电荷法计算输电线周围电场。三相输电线导线截面内的电场分布计算，导线半径，电压、导线位置高度都可以编辑更改。(The simulation charge method is used to calculate the electric field around the transmission line. Calculation of electric field distribution in conductor section of three phase transmission line, conductor radius, voltage and conductor position height can be edited and altered.)