METHOD FOR THE CONTINUOUS MONITORING AND DIAGNOSIS OF SOURCES OF PARTIAL DISCHARGES (PDs) IN HIGH-VOLTAGE CABLES DURING CONNECTION TO, AND OPERATION IN THE POWER GRID, AND PHYSICAL SYSTEM FOR CARRYING OUT SAME

摘要

The invention relates to a method specially designed for detecting events associated with partial discharges (PDs) in high-voltage cables, comprising the identification of the location and the evaluation of the amplitude and rate of repetition per period of the grid voltage, with the possibility of identifying different sources producing PD signals as a function of the location thereof and recognising the type of fault associated with PDs in the same location, including the measurement of the generated electric signals and the discrimination thereof in relation to the background noise. The invention also relates to a system for carrying out said method, comprising means for discriminating the noise in relation to the transient waveform of the PD, determining the parameters associated therewith, determining the map of sources of PDs along the length of the cable, graphically representing said sources, and identifying the patterns of the separated PD sources as a function of the location thereof along the length of the cable.