Title :
The study of acoustic emission method for detection of partial discharge in power transformer
Author :
Deheng, Zhu ; Kexiong, Tan ; Xianhe, Jin
Author_Institution :
Tsinghua Univ., Beijing, China
Abstract :
Six kinds of typical oil gaps were designed and tested to simulate partial discharges (PD) in the insulation of power transformers. The frequency spectra of acoustic emission (AE) of PD in those gaps were presented and investigated with a computer-aided measuring system. The attenuation of AE and the variation of its frequency spectrum in oil and in oil-impregnated paper were studied. Peak frequencies in the frequency spectra of AE of PD in these gaps were distributed in the 70-150-kHz range. Based on test results, the frequency bandwidth of 70-180 kHz was recommended for the AE measuring system of PD detection in power transformers
Keywords :
acoustic emission testing; automatic testing; insulation testing; partial discharges; power transformers; transformer insulation; transformer testing; 110 kHz; 70 to 180 kHz; acoustic emission method; computer-aided measuring system; discharge detection; discharge simulation; frequency spectra; oil gaps; oil-impregnated paper; partial discharge; power transformer; transformer insulation; Acoustic emission; Acoustic signal detection; Acoustic testing; Computational modeling; Frequency measurement; Insulation testing; Oil insulation; Partial discharges; Petroleum; Power transformers;
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.1988.38472
