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Early stages of insulation defects in high voltage equipment initiate partial discharges which emit radio frequency impulses. Location of the defect can be estimated by identifying the source of this radiation. Directive antennas are capable of identifying the direction in which the source of a particular signal source is located. However the resolution that can be achieved is limited by its beam...
To ensure safe operation and to prevent costly unplanned system outages, live electrical networks are routinely monitored by the network operators. Periodic surveys to collect chemical, thermal or visual evidence of possible equipment degradations are common in practice. Insulation defects in high voltage equipment initiate partial discharges resulting in radio frequency emissions. Locations of defects...
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