Method for determining the structure of an electricity distribution network, the method being implemented by a computer, wherein the distribution network comprises a supply station having one or more electric power supply outputs (18 j) of several electrical loads (16 i), and comprising the following steps: a) acquisition (100; 200; 300; 400) for each electrical load (16 i) of first data (E Ci (t 1)) relating to the electric power consumed by the electrical load (16 i) during different time intervals (t 1) measured by means of a first power measurement sensor (20 i), b) acquisition (100; 200; 300; 400) for each output (18 j) of second data (E Dj (t 1)) relating to the electric power delivered by the output (18 j) during different time intervals (t 1) measured by means of a second power measurement sensor (20 j), c) generation (102; 202; 302; 402) by means of a generation module of several different data sets (Je 1), each associated with one of the different time intervals, wherein each data set (Je 1) comprises first (E C1 (t 1)) and second (E Dj (t 1)) data associated with said time interval (t 1), characterised in that the method additionally comprises the following steps: d) calculation (104; 204; 304; 404) of a first selection criterion (C1 1) for each data set, wherein the first selection criterion (C1 1) is a criterion selected from a global rate of electric power losses between the output or outputs (18 j) and the loads (16 i) and a difference in electric power consumption between the different loads (16 i), e) selection (106; 206; 306; 406) of a first unit (En 1) of data sets (Je k) from the generated sets (Je l) by means of a selection unit as a function of the first calculated selection criteria (C1 1), f) determination (108; 208; 310; 408) from the selected first unit of connection parameters (a ij), wherein for each electrical load (16 i) said parameters (a ij) have an identifier of the output (18 j), to which it is connected. a) acquisition (100; 200; 300; 400) for each electrical load (16 i) of first data (E Ci (t 1)) relating to the electric power consumed by the electrical load (16 i) during different time intervals (t 1) measured by means of a first power measurement sensor (20 i), b) acquisition (100; 200; 300; 400) for each output (18 j) of second data (E Dj (t 1)) relating to the electric power delivered by the output (18 j) during different time intervals (t 1) measured by means of a second power measurement sensor (20 j), c) generation (102; 202; 302; 402) by means of a generation module of several different data sets (Je 1), each associated with one of the different time intervals, d) calculation (104; 204; 304; 404) of a first selection criterion (C1 1) for each data set, wherein the first selection criterion (C1 1) is a criterion selected from a global rate of electric power losses between the output or outputs (18 j) and the loads (16 i) and a difference in electric power consumption between the different loads (16 i), e) selection (106; 206; 306; 406) of a first unit (En 1) of data sets (Je k) from the generated sets (Je l) by means of a selection unit as a function of the first calculated selection criteria (C1 1), f) determination (108; 208; 310; 408) from the selected first unit of connection parameters (a ij), wherein for each electrical load (16 i) said parameters (a ij) have an identifier of the output (18 j), to which it is connected.