System for online monitoring of one or more electric cables in an electrical distribution grid

A monitoring system for online monitoring of an assembly having one or more electric cables which are connected in series in an electrical distribution grid, the system comprising:

• a central unit located on a portion of said assembly being monitored and a plurality of data acquisition units which are spread along said one or more electric cables in predefined positions,
• wherein said system further comprises a plurality of subassemblies of measurement sensors, the measurement sensors of a given subassembly being associated with one and the same data acquisition unit and spread over at least one portion of the length of said one or more electric cables in the vicinity of said one and the same data acquisition unit, in that the number and the type of measurement sensors of a given subassembly vary according to the position of the data acquisition unit with which these measurement sensors are associated and the size of said portion of length, and in that each data acquisition unit is configured to receive and preprocess, during acquisition campaigns carried out under the command of the central unit, measurements originating from the measurement sensors which are associated with it in a given subassembly, and to transmit the received and preprocessed measurements to the central unit.\