说明：  模拟电荷法校验程序。针对架空输电线路，将位于导线中心的模拟电荷计算出来后，选取导线表面的校验点，对计算结果误差进行检验。
(Analog charge method check program. For the overhead transmission line, the simulated charge located at the conductor center is calculated, and the checkpoint of the conductor surface is selected to test the error of the calculation result.)