Electric supply automatic system and operation method thereof

A plurality of distribution lines that make up the distribution network, to each of a plurality of opening and closing, and opening and closing on to the distribution lines that are provided in a state of always open and always input state command a measurement of the load current and receive measurement data, stores the list and the calibration data of the always-open opening and closing portion, the list, and using the measurement data using the calculation result after calculating the respective sections by the power supply and the power loss in the distribution lines according to the position movement of the normally open closing portion the distribution automation system that includes a server for deciding the position of the normally open closing portion are provided. Distribution automation systems, power dissipation, power supply