Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes
The timely detection and accurate location of capacitor element breakdown faults (CEBFs) are crucial in optimizing the performance of alternating current (AC) filters and ensuring the safety and stable operation of high-voltage direct current transmission systems. In this paper, by analyzing the phy...
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MDPI AG
2025-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/6/1403 |
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| _version_ | 1850090085635063808 |
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| author | Wenhai Zhang Wen Xiao Shu Zhang Yuzhe Li |
| author_facet | Wenhai Zhang Wen Xiao Shu Zhang Yuzhe Li |
| author_sort | Wenhai Zhang |
| collection | DOAJ |
| description | The timely detection and accurate location of capacitor element breakdown faults (CEBFs) are crucial in optimizing the performance of alternating current (AC) filters and ensuring the safety and stable operation of high-voltage direct current transmission systems. In this paper, by analyzing the physical process of CEBFs and the transient fault characteristics, a mapping relationship is established between the initial phase angle of the fault, the direction of sudden changes in unbalanced current, and the current difference on the low-voltage side for CEBFs occurring in different bridge arms. A fault arm localization method is developed for CEBFs in H-type AC filters based on the direction of sudden current changes. This technique is shown to enhance both the location accuracy and reliability compared with previous methods. The feasibility and accuracy of the proposed method are validated through simulations and experimental data. |
| format | Article |
| id | doaj-art-e98e53a4e5bf448f9bf6c11bb269ac06 |
| institution | DOAJ |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-e98e53a4e5bf448f9bf6c11bb269ac062025-08-20T02:42:38ZengMDPI AGEnergies1996-10732025-03-01186140310.3390/en18061403Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current ChangesWenhai Zhang0Wen Xiao1Shu Zhang2Yuzhe Li3The College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaThe College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaThe College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaThe College of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaThe timely detection and accurate location of capacitor element breakdown faults (CEBFs) are crucial in optimizing the performance of alternating current (AC) filters and ensuring the safety and stable operation of high-voltage direct current transmission systems. In this paper, by analyzing the physical process of CEBFs and the transient fault characteristics, a mapping relationship is established between the initial phase angle of the fault, the direction of sudden changes in unbalanced current, and the current difference on the low-voltage side for CEBFs occurring in different bridge arms. A fault arm localization method is developed for CEBFs in H-type AC filters based on the direction of sudden current changes. This technique is shown to enhance both the location accuracy and reliability compared with previous methods. The feasibility and accuracy of the proposed method are validated through simulations and experimental data.https://www.mdpi.com/1996-1073/18/6/1403AC filtercapacitorelement breakdowntransient characteristicsfault locationHVDC transmission |
| spellingShingle | Wenhai Zhang Wen Xiao Shu Zhang Yuzhe Li Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes Energies AC filter capacitor element breakdown transient characteristics fault location HVDC transmission |
| title | Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes |
| title_full | Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes |
| title_fullStr | Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes |
| title_full_unstemmed | Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes |
| title_short | Fault Location in H-Type AC Filters Based on Characteristics of Sudden Current Changes |
| title_sort | fault location in h type ac filters based on characteristics of sudden current changes |
| topic | AC filter capacitor element breakdown transient characteristics fault location HVDC transmission |
| url | https://www.mdpi.com/1996-1073/18/6/1403 |
| work_keys_str_mv | AT wenhaizhang faultlocationinhtypeacfiltersbasedoncharacteristicsofsuddencurrentchanges AT wenxiao faultlocationinhtypeacfiltersbasedoncharacteristicsofsuddencurrentchanges AT shuzhang faultlocationinhtypeacfiltersbasedoncharacteristicsofsuddencurrentchanges AT yuzheli faultlocationinhtypeacfiltersbasedoncharacteristicsofsuddencurrentchanges |