Time-frequency Analysis of Partial Discharge Signal Based on VMD and Wigner-Ville Distribution

Authors

Yafei Jia, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Baoding 071003, China;
Yongli Zhu, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Baoding 071003, China;
Liuwang Wang, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric Power University), Baoding 071003, China;

Abstract

Abstract: To effectively analyze the time-frequency characteristics of partial discharge signals of high voltage electrical equipment, a novel time-frequency analysis method based on variational mode decomposition (VMD) and Wigner-Ville distribution (VMD-WVD) was proposed, which effectively solves the problem of cross term interference in the Wigner-Ville distribution method. The known partial discharge signals were decomposed by VMD and the mode components were extracted. These Wigner-Ville distributions of mode components were computed and the Wigner-Ville of each component signal was added linearly to reconstruct the Wigner-Ville of the original signal. The proposed method was applied to analyze simulation signals and measured partial discharge signal. The time-frequency results of the proposed method effectively restrain the cross terms of Wigner-Ville distribution, and guarantee a high energy aggregation and good time-frequency resolution. Its merit of proposed method shows that VMD-WVD is an effective time-frequency distribution for analyzing partial discharge signals.

Recommended Citation

Jia, Yafei; Zhu, Yongli; and Wang, Liuwang (2019) "Time-frequency Analysis of Partial Discharge Signal Based on VMD and Wigner-Ville Distribution," Journal of System Simulation: Vol. 30: Iss. 2, Article 25.
DOI: 10.16182/j.issn1004731x.joss.201802025
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss2/25

First Page

569

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201802025

Last Page

578

CLC

TM85

Recommended Citation

Jia Yafei, Zhu Yongli, Wang Liuwang. Time-frequency Analysis of Partial Discharge Signal Based on VMD and Wigner-Ville Distribution[J]. Journal of System Simulation, 2018, 30(2): 569-578.

DOI

10.16182/j.issn1004731x.joss.201802025