Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection
In view of the fact that the partial discharge (PD) signal energy is mainly concentrated below hundreds of megahertz, the ultra-high frequency part of the energy is weak, and the interior space of the switchgear is narrow, this paper proposes a new method for PD detection of the switchgear based on...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/2/336 |
| _version_ | 1797443489282129920 |
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| author | Chunguang Suo Jingjing Zhao Xuehua Wu Zhipeng Xu Wenbin Zhang Mingxing He |
| author_facet | Chunguang Suo Jingjing Zhao Xuehua Wu Zhipeng Xu Wenbin Zhang Mingxing He |
| author_sort | Chunguang Suo |
| collection | DOAJ |
| description | In view of the fact that the partial discharge (PD) signal energy is mainly concentrated below hundreds of megahertz, the ultra-high frequency part of the energy is weak, and the interior space of the switchgear is narrow, this paper proposes a new method for PD detection of the switchgear based on near-field detection. Firstly, based on the principle of PD, the field characteristics of the signal in the switchgear are analyzed. After that, the probe is designed with an electric small loop structure. Based on its equivalent circuit, its measurement principle and amplitude frequency characteristics are analyzed. The influence of probe size and material on amplitude frequency characteristics is obtained by using simulation software High Frequency Structure Simulator (HFSS), and the probe parameters suitable for PD detection in the switchgear are determined. Finally, the performance of the probe is measured by network analyzer, and the PD signal is tested on the simulated PD test platform. The results show that the probe works in the frequency band of 10–200 MHz and can receive PD signals containing more energy information. In the operating frequency band, the reflection coefficient of the probe port is very large, and its interference to the signal near field is particularly small. The probe also has good frequency response characteristics, and the fluctuation in the frequency band is less than 5 dB, which can obtain more accurate PD signal characteristics in subsequent processing. In addition, the probe is passive, with dimensions of 166 mm in length, 104 mm in width, and 2 mm in thickness, which is suitable for placing in the switchgear with small internal space. The results of PD receiving test show that the probe can reflect the occurrence of PD remarkably and accurately. |
| first_indexed | 2024-03-09T12:56:49Z |
| format | Article |
| id | doaj.art-4f8dfc128ff147848b95f6c9f8108ce0 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T12:56:49Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-4f8dfc128ff147848b95f6c9f8108ce02023-11-30T21:59:04ZengMDPI AGElectronics2079-92922023-01-0112233610.3390/electronics12020336Partial Discharge Detection Technology for Switchgear Based on Near-Field DetectionChunguang Suo0Jingjing Zhao1Xuehua Wu2Zhipeng Xu3Wenbin Zhang4Mingxing He5College of Science, Kunming University of Science and Technology, Kunming 650504, ChinaCollege of Science, Kunming University of Science and Technology, Kunming 650504, ChinaCollege of Science, Kunming University of Science and Technology, Kunming 650504, ChinaCollege of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650504, ChinaCollege of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650504, ChinaCollege of Science, Kunming University of Science and Technology, Kunming 650504, ChinaIn view of the fact that the partial discharge (PD) signal energy is mainly concentrated below hundreds of megahertz, the ultra-high frequency part of the energy is weak, and the interior space of the switchgear is narrow, this paper proposes a new method for PD detection of the switchgear based on near-field detection. Firstly, based on the principle of PD, the field characteristics of the signal in the switchgear are analyzed. After that, the probe is designed with an electric small loop structure. Based on its equivalent circuit, its measurement principle and amplitude frequency characteristics are analyzed. The influence of probe size and material on amplitude frequency characteristics is obtained by using simulation software High Frequency Structure Simulator (HFSS), and the probe parameters suitable for PD detection in the switchgear are determined. Finally, the performance of the probe is measured by network analyzer, and the PD signal is tested on the simulated PD test platform. The results show that the probe works in the frequency band of 10–200 MHz and can receive PD signals containing more energy information. In the operating frequency band, the reflection coefficient of the probe port is very large, and its interference to the signal near field is particularly small. The probe also has good frequency response characteristics, and the fluctuation in the frequency band is less than 5 dB, which can obtain more accurate PD signal characteristics in subsequent processing. In addition, the probe is passive, with dimensions of 166 mm in length, 104 mm in width, and 2 mm in thickness, which is suitable for placing in the switchgear with small internal space. The results of PD receiving test show that the probe can reflect the occurrence of PD remarkably and accurately.https://www.mdpi.com/2079-9292/12/2/336partial discharge detectionnear-field detectionswitchgearmagnetic field probe |
| spellingShingle | Chunguang Suo Jingjing Zhao Xuehua Wu Zhipeng Xu Wenbin Zhang Mingxing He Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection Electronics partial discharge detection near-field detection switchgear magnetic field probe |
| title | Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection |
| title_full | Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection |
| title_fullStr | Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection |
| title_full_unstemmed | Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection |
| title_short | Partial Discharge Detection Technology for Switchgear Based on Near-Field Detection |
| title_sort | partial discharge detection technology for switchgear based on near field detection |
| topic | partial discharge detection near-field detection switchgear magnetic field probe |
| url | https://www.mdpi.com/2079-9292/12/2/336 |
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