Method and system for monitoring a cable system of an electric power transmission system

摘要

Method and system for monitoring parameters of a cable system of an electric power transmission system, wherein: a plurality of monitoring nodes is associated with different monitoring points of the cable system; the monitoring nodes are operated alternatively in a sleeping mode and in an active mode; in the active modes the monitoring nodes acquire values of at least one of said parameters and process the acquired values so as to generate corresponding output data; a central unit collects the output data generated by the monitoring nodes; the output data generated by the monitoring nodes are sent from the monitoring nodes, when in active mode, toward the central unit by making them pass from one of the monitoring nodes to another, by starting from the monitoring node that generates the output data until a last of the monitoring nodes, which forwards the output data to the central unit.

主权项

1. A monitoring system for monitoring parameters of a cable system of an electric power transmission system, comprising a central unit and a plurality of monitoring nodes adapted to be placed at different monitoring points of the cable system, wherein:
each monitoring node is adapted to alternatively operate in sleeping mode and in active mode, and during sleeping mode each monitoring node is adapted to be idle with no reception, transmission, or acquisition of data, and during active mode each monitoring node is adapted to acquire a value of at least one of said parameters and to process the acquired value so as to generate corresponding output data; and the central unit is adapted to collect the output data corning from the monitoring nodes;wherein the monitoring nodes are connected in cascade and, during active mode, each monitoring node is adapted:
to receive output data from an upward node of the cascade, if any; and to send to a downward node, if any, the output data received from said upward node and the output data generated by the monitoring node, a last monitoring node of the cascade adapted to send said output data to the central unit; andwherein the monitoring nodes are adapted to operate alternatively in sleeping mode and in active mode with a period T according to synchronized time frames, wherein T is the time between the beginning of two consecutive active modes,wherein the time synchronized in such a way that each monitoring node, starts to operate in each active mode before the upward monitoring node starts sending the output data thereto.