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

fYear

1988

fDate

12-16 Sep 1988

Firstpage

614

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38472

Filename

38472