METHOD FOR NONCONTACT REMOTE DIAGNOSTICS OF HIGH-VOLTAGE INSULATORS Russian patent published in 2019 - IPC G01R31/12 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of electrical measuring equipment and can be used for contactless remote diagnostics of the operating state of high-voltage insulators. Contactless reception by an electromagnetic receiver of pulsed signals of partial discharges, their indication and computer processing is carried out in order to determine in each of the discrete intervals of phase voltage average values of the number and intensity of partial charge pulses, that exceed the permissible threshold for the occurrence of defects or their development in comparison with the reference insulator. Additionally determine the distribution of the number of partial discharges in intensity for positive and negative half periods of high voltage. Presence and type of the most dangerous defects is judged by the expansion of the phase intervals of radiation of partial discharges and the sharp increase in the number of partial discharges in negative high-voltage half-periods compared to positive half-periods. In addition, the width and shape of single positive and negative pulses of partial discharges are determined, and the type and location of the defect is determined by their differences (increase in the width of the negative pulse).

EFFECT: ability to determine the presence of a dangerous defect, its type and location.

1 cl, 3 dwg