On-Line Monitoring Partial Discharge Signal Acquisition Technology of High-Voltage Cable Based on DS-STFT Technology

In view of the research on the high interference and high false alarm rate of partial discharge signals in high-voltage cable online monitoring, a down-sampling short-time Fourier transform (DS-STFT) intelligent partial discharge signal acquisition method is proposed. This method uses DS-STFT to ext...

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Bibliographic Details
Published in2022 4th International Conference on Electrical Engineering and Control Technologies (CEECT) pp. 536 - 539
Main Authors Xiaoxuan, Sun, Hai, Li, Wei, Zhang, Jingjing, Zhou, Jie, Zhou, Chenyuan, Wang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2022
Subjects
Electrical engineering
Feature extraction
Fourier transforms
high-voltage cables
High-voltage techniques
Interference
on-line monitoring
partial discharge
Partial discharges
Time-frequency analysis
time-frequency characteristics
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Summary:In view of the research on the high interference and high false alarm rate of partial discharge signals in high-voltage cable online monitoring, a down-sampling short-time Fourier transform (DS-STFT) intelligent partial discharge signal acquisition method is proposed. This method uses DS-STFT to extract time-domain spectral features with high recognition and stability, proposes new acquisition trigger conditions on the basis of traditional threshold- time acquisition, and applies it to high-voltage cable partial line monitoring scenarios. The experimental results show that the trigger accuracy of this method is more than 96%, and it has been applied to the partial discharge on-line monitoring of a 110kV high-voltage cable line. It has been proved that this method can effectively detect the suspected PD pulse signal.
DOI:10.1109/CEECT55960.2022.10030594