Title :
Recent study of acoustic emission location for partial discharge in UHV transformers and shunt reactors
Author :
Zhiquing Zhao ; Yiquan Yuan
Author_Institution :
Xi´an Transformer & Electr. Furnace Works, Shaanxi
Abstract :
The authors describe an electric-acoustic laboratory, including a partial discharge detection and location system. The laboratory includes special acoustic transducers which possesses various bandwidth and longitudinal sensitivity characteristics. The response curves of the transducers are well selected and checked carefully. An advanced multichannel transient recorder is used to acquire electrical and ultrasonic signals which can be sent to a microcomputer. This system provides for accurate and efficient measurements of the distance from a partial discharge source to the transducer. Results obtained with this system are presented
Keywords :
acoustic emission testing; high-voltage techniques; insulation testing; partial discharges; power transformers; reactors (electric); transformer insulation; transformer testing; ultrasonic materials testing; UHV transformers; acoustic emission location; acoustic transducers; electric-acoustic laboratory; insulation testing; longitudinal sensitivity characteristics; microcomputer; multichannel transient recorder; partial discharge detection; power transformers; response curves; shunt reactors; ultrasonic signals; Acoustic emission; Acoustic measurements; Acoustic signal detection; Acoustic transducers; Bandwidth; Microcomputers; Partial discharge measurement; Partial discharges; Ultrasonic transducers; Ultrasonic variables measurement;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38477
