PARTIAL DISCHARGE PASSIVE MONITOR

摘要

An apparatus for the monitoring of partial discharge in on-line high voltage electrical equipment such as transformers. The apparatus consists in transducer means (11), amplifying means (21) and an analyser means (15). The transducer means (15) converts directed radio frequency waves and ultrasonic pressure waves into electrical signal outputs, which outputs are then amplified and analysed so as to determine if partial discharge is occurring. The apparatus comprises a means for minimising interference (55, 12) in the electrical signal outputs, and is adapted such that the transducer means (15) is capable of being mounted within the wall (12) of the electrical equipment.