A multi-layer protection scheme for MMC-power electronic transformers
As a key interfacing equipment for the AC-DC hybrid distribution network, power electronic transformers (PETs) lack a protection scheme with high sensitivity and reliability. To address this issue, this paper proposes a multi-layer protection scheme for modular multilevel converter-power electronic...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-08-01
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| Series: | International Journal of Electrical Power & Energy Systems |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142061525003345 |
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| author | Xinchen Zhu Niancheng Zhou Jianquan Liao Qianggang Wang Yongjie Luo Dachuan Yu |
| author_facet | Xinchen Zhu Niancheng Zhou Jianquan Liao Qianggang Wang Yongjie Luo Dachuan Yu |
| author_sort | Xinchen Zhu |
| collection | DOAJ |
| description | As a key interfacing equipment for the AC-DC hybrid distribution network, power electronic transformers (PETs) lack a protection scheme with high sensitivity and reliability. To address this issue, this paper proposes a multi-layer protection scheme for modular multilevel converter-power electronic transformers (MMC-PETs). Firstly, the fault characteristics and fault propagation mechanisms of various MMC-PET faults are analysed. On this basis, this study deconstructs MMC-PET into three layers and constructs criteria for each layer of protection. Among them, the two supplementary protection layers are introduced to improve protection sensitivity for faults inside MMC-PET. And the protection for faults outside MMC-PET can remain unaffected by the suppression of negative sequence currents during AC-side faults. Finally, a 10 kV/380 V MMC-PET is modelled in MATLAB/Simulink and RT-LAB real-time simulation platform, and the effectiveness of the proposed protection scheme is verified via simulation results. |
| format | Article |
| id | doaj-art-b1c43b9206bb4e6d9811a48bdc7e567f |
| institution | DOAJ |
| issn | 0142-0615 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Electrical Power & Energy Systems |
| spelling | doaj-art-b1c43b9206bb4e6d9811a48bdc7e567f2025-08-20T03:21:39ZengElsevierInternational Journal of Electrical Power & Energy Systems0142-06152025-08-0116911078610.1016/j.ijepes.2025.110786A multi-layer protection scheme for MMC-power electronic transformersXinchen Zhu0Niancheng Zhou1Jianquan Liao2Qianggang Wang3Yongjie Luo4Dachuan Yu5State Key Laboratory of Power Transmission Equipment Technology (School of Electrical Engineering, Chongqing University), ChinaState Key Laboratory of Power Transmission Equipment Technology (School of Electrical Engineering, Chongqing University), China; Corresponding author.School of Electrical Engineering, Sichuan University, ChinaState Key Laboratory of Power Transmission Equipment Technology (School of Electrical Engineering, Chongqing University), ChinaState Key Laboratory of Power Transmission Equipment Technology (School of Electrical Engineering, Chongqing University), ChinaCollege of Automation and Electronic Engineering, Qingdao University of Science and Technology, ChinaAs a key interfacing equipment for the AC-DC hybrid distribution network, power electronic transformers (PETs) lack a protection scheme with high sensitivity and reliability. To address this issue, this paper proposes a multi-layer protection scheme for modular multilevel converter-power electronic transformers (MMC-PETs). Firstly, the fault characteristics and fault propagation mechanisms of various MMC-PET faults are analysed. On this basis, this study deconstructs MMC-PET into three layers and constructs criteria for each layer of protection. Among them, the two supplementary protection layers are introduced to improve protection sensitivity for faults inside MMC-PET. And the protection for faults outside MMC-PET can remain unaffected by the suppression of negative sequence currents during AC-side faults. Finally, a 10 kV/380 V MMC-PET is modelled in MATLAB/Simulink and RT-LAB real-time simulation platform, and the effectiveness of the proposed protection scheme is verified via simulation results.http://www.sciencedirect.com/science/article/pii/S0142061525003345Modular multilevel converter-power electronic transformer (MMC-PET)Multi-layerProtection |
| spellingShingle | Xinchen Zhu Niancheng Zhou Jianquan Liao Qianggang Wang Yongjie Luo Dachuan Yu A multi-layer protection scheme for MMC-power electronic transformers International Journal of Electrical Power & Energy Systems Modular multilevel converter-power electronic transformer (MMC-PET) Multi-layer Protection |
| title | A multi-layer protection scheme for MMC-power electronic transformers |
| title_full | A multi-layer protection scheme for MMC-power electronic transformers |
| title_fullStr | A multi-layer protection scheme for MMC-power electronic transformers |
| title_full_unstemmed | A multi-layer protection scheme for MMC-power electronic transformers |
| title_short | A multi-layer protection scheme for MMC-power electronic transformers |
| title_sort | multi layer protection scheme for mmc power electronic transformers |
| topic | Modular multilevel converter-power electronic transformer (MMC-PET) Multi-layer Protection |
| url | http://www.sciencedirect.com/science/article/pii/S0142061525003345 |
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