The time-frequency analysis of multi-source partial discharges

被引：0

作者：

Boczar, Tomasz ^{[1
]}

Borucki, Sebastian ^{[1
]}

Cichon, Andrzej ^{[1
]}

Lorenc, Marcin ^{[1
]}

机构：

[1] Politechn Opolska, Inst Elektroenerget, PL-45758 Opole, Poland

来源：

PRZEGLAD ELEKTROTECHNICZNY | 2008年 / 84卷 / 12期

关键词：

power transformers; partial discharges; acoustic emission;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

These Within the research work carried out, the results of which are presented in this paper, a comparative analysis of the acoustic emission (AE) signals generated by partial multi-source discharges (PDs) was carried out. The investigations were carried out in a model system, in which PDs were generated with differential spark-gaps. The AE signals were registered with a contact transducer placed on the external part of the tub. For the AE signals generated by both single-source PDs and multi-source PDs, a time-frequency analysis domain using a short-time Fourier transform (STFT) were carried out. Analyzing the research results the signals registered were compared from the point of view of identification possibilities of the particular PD forms.

引用

页码：339 / 341

页数：3