Interest & utility of time frequency and time scale transforms in the partial discharges analysis

被引：3

作者：

Caironi, C ^{[1
]}

Brie, D ^{[1
]}

Durantay, L ^{[1
]}

Rezzoug, A ^{[1
]}

机构：

[1] Alstom Moteurs, F-54250 Champigneulles, France

来源：

CONFERENCE RECORD OF THE 2002 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION | 2002年

关键词：

D O I：

10.1109/ELINSL.2002.995987

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：

The development of Time-Frequency and Time-Scale Transforms has been progressed quickly for 20 years, This development and the progression of the Numerical acquisition enable the utilization of these mathematical tools to analyze Partial Discharges (PD) in the induction motors insulation. Some papers have been written about the Wavelet tools in order to analyze the partial discharges. This paper is attended as a tutorial overview of the Time Frequency and Time Scale Transforms applied to the PD analysis on the stators of the induction motors. In the first part two Time-Frequency Transforms are introduced : Short Time Fourier Transform and Wigner Distribution. The mathematical tools for the implementation of the STFT are given. An example of extraction of a PD signal from numeric noise is given and its results discussed. In the second part the Wavelets are presented on the same case study as for the Time Frequency Transforms.

引用

页码：516 / 522

页数：7