电路引用Understanding of partial discharge activity in transformer oil under transient voltages adopting acoustic emission technique.pdfVIP

2011 6th International Conference on Industrial and Information Systems, ICIIS 2011, Aug. 16-19, 2011, Sri Lanka Understanding of Partial discharge activity in transformer oil under transient voltages adopting Acoustic emission technique 2 3 1 A. S. Prasanna Venkatesh , M. G. Danikas and R. Sarathi 1Department of Electrical Engineering, IIT Madras, Chennai- 600 036 2Department of Electronics and Communication Engineering, SSNCE, Kalavakkam, Kancheepuram- 603 110 3Department of Electrical and Computer Engineering, Democritus University of Thrace, GR-671 00 Xanthi, Greece Abstract-- One of the causes for the failure of power mounting a transducer over the surface of the structure. This transformers is due to formation of partial discharges. Partial process is known as “Acoustic Emission” (AE). The signals discharge taking place in transformer oil under AC voltages detected are called acoustic signals, which are used for were studied by researchers worldwide in detail. But for the PD diagnostic study [3]. Acoustic emission technique’s use for formation under transient voltages, the results are scanty. In identification of defects and its application in the high voltage the present work, three different defects were considered viz. field is significant. Considerable research work was carried corona discharge, discharge initiated due to floating particle and discharge formation due to particle movement and the out to und