To carry out production technology training for substation operation personnel, as a substation operation staff, first of all to be familiar with the most basic electrical knowledge, circuit principle, this is very necessary. Only then can we master all kinds of substation equipment and power grid connection, from primary equipment to secondary equipment, from inspection to operation and maintenance, can our operation personnel know where there is electricity. Where is the danger, what is the voltage, and what is the danger after the touch.