Automatic electric power distribution system and method for operating same

Disclosed is an automatic electric power distribution system, comprising: a plurality of distribution lines that configure a distribution network; a plurality of switch units that are installed in either a normally open state or a normally closed state on the distribution lines; and a server that issues a command for measuring a load current to each switch unit and receives the measured data, stores the measured data and a list of the switch units that are in a normally open state, calculates the power supply and power loss for each section according to change in position of the normally open switch units using the list and the measured data, and then determines the positions of the normally open switch units using the calculation result.