Partial discharge pattern recognition of transformer based on electric signal and ultrasonic comprehensive analysis

UHF partial discharge location method based on time fingerprint

“…When partial discharge occurs, it will be accompanied by a variety of physical signals, including optical signal, acoustic signal, ultrasonic signal, electromagnetic signal, and so on [13][14][15][16]. For optical and acoustic signals, on-site inspection by power operation and maintenance personnel is needed, which lacks accuracy and coverage.…”