Academic Journal
Acoustic Identification Method of Partial Discharge in GIS Based on Improved MFCC and DBO-RF
| Title: | Acoustic Identification Method of Partial Discharge in GIS Based on Improved MFCC and DBO-RF |
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| Authors: | Xueqiong Zhu, Chengbo Hu, Jinggang Yang, Ziquan Liu, Zhen Wang, Zheng Liu, Yiming Zang |
| Source: | Energies, Vol 18, Iss 7, p 1619 (2025) |
| Publisher Information: | MDPI AG, 2025. |
| Publication Year: | 2025 |
| Collection: | LCC:Technology |
| Subject Terms: | GIS, partial discharge, acoustic identification, mel cepstral coefficient, dung beetle optimization algorithm, random forest, Technology |
| More Details: | Gas Insulated Switchgear (GIS) is a type of critical substation equipment in the power system, and its safe and stable operation is of great significance for ensuring the reliability of power system operation. To accurately identify partial discharge in GIS, this paper proposes an acoustic identification method based on improved mel frequency cepstral coefficients (MFCC) and dung beetle algorithm optimized random forest (DBO-RF) based on the ultrasonic detection method. Firstly, three types of typical GIS partial discharge defects, namely free metal particles, suspended potential, and surface discharge, were designed and constructed. Secondly, wavelet denoising was used to weaken the influence of noise on ultrasonic signals, and conventional, first-order, and second-order differential MFCC feature parameters were extracted, followed by principal component analysis for dimensionality reduction optimization. Finally, the feature parameters after dimensionality reduction optimization were input into the DBO-RF model for fault identification. The results show that this method can accurately identify partial discharge of typical GIS defects, with a recognition accuracy reaching 92.2%. The research results can provide a basis for GIS insulation fault detection and diagnosis. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 18071619 1996-1073 |
| Relation: | https://www.mdpi.com/1996-1073/18/7/1619; https://doaj.org/toc/1996-1073 |
| DOI: | 10.3390/en18071619 |
| Access URL: | https://doaj.org/article/3df94bd9e14c49f783ecc1f28304f589 |
| Accession Number: | edsdoj.3df94bd9e14c49f783ecc1f28304f589 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 18071619 19961073 |
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| DOI: | 10.3390/en18071619 |
| Published in: | Energies |
| Language: | English |