The question of earthing switch(ES) switching induced current was present in this paper,the feature of static and electromagnetism induction of common-tower double-circuit lines was also present.

• 对接地开关开合感应电流的问题,同杆双回线路电磁感应和静电感应的特点,以及我国接地开关开合感应电流的应用现状和国内产品情况进行了介绍。