Title :
Partial discharge detection using acoustic emission method for a waveguide functional high-voltage cast-resin dry-type transformer
Author :
Su, Ching-Chau ; Tai, Cheng-Chi ; Chen, Chien-Yi ; Hsieh, Ju-Chu ; Chen, Jiann-Fuh
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan
Abstract :
This study adopts the acoustic emission (AE) method to measure partial discharges (PD) in a cast-resin dry-type transformer and proposes a waveguide atop the high-voltage winding of the transformer to improve the propagation of the PD acoustic signals occurring in winding to acoustic emission sensors used. A waveguide is proposed to improve the signalspsila quick attenuation and it also is a safe method for electrical equipments measurement. Finally, a waveguide is practically installed on a cast-resin dry-type transformer; the measurements and the locating of PDspsila AE signals for transformer are carried out. This study demonstrates a feasible new simple, safe and economical solution for diagnosing and locating PDs in the transformer.
Keywords :
acoustic emission; partial discharge measurement; power transformer insulation; transformer oil; acoustic emission method; acoustic emission sensors; partial discharge acoustic signals; partial discharge detection; partial discharges measurement; waveguide functional high-voltage cast-resin dry-type transformer; Acoustic emission; Acoustic measurements; Acoustic propagation; Acoustic sensors; Acoustic signal detection; Acoustic waveguides; Acoustic waves; Partial discharge measurement; Partial discharges; Waveguide components; Acoustic emission; Cast-resin dry-type transformer; High-frequency current transformer (HFCT); Partial discharges (PD); Waveguide;
Conference_Titel :
Condition Monitoring and Diagnosis, 2008. CMD 2008. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-1621-9
Electronic_ISBN :
978-1-4244-1622-6
DOI :
10.1109/CMD.2008.4580339
