Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems
This paper proposes a joint limiting control strategy for suppressing DC fault current and arm current in modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems, which includes two target-oriented current limiting controls. To limit the DC fault current in the early fault...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2023-01-01
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| Series: | Journal of Modern Power Systems and Clean Energy |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10093826/ |
| _version_ | 1797509746075369472 |
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| author | Qin Jiang Yan Tao Baohong Li Tianqi Liu Zhe Chen Frede Blaabjerg Peng Wang |
| author_facet | Qin Jiang Yan Tao Baohong Li Tianqi Liu Zhe Chen Frede Blaabjerg Peng Wang |
| author_sort | Qin Jiang |
| collection | DOAJ |
| description | This paper proposes a joint limiting control strategy for suppressing DC fault current and arm current in modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems, which includes two target-oriented current limiting controls. To limit the DC fault current in the early fault stage, an equivalent modular multilevel converter (MMC) impedance is obtained, and its high-frequency part is reshaped by introducing virtual impedance, which is realized by adjusting the inserted submodules adaptively. Following the analysis of MMC control characteristics, the arm current limiting strategy is investigated, with results showing that the inner-loop control has significant effects on arm current and that a simple low-pass filter can reduce the arm current in the fault period. Finally, by combining the virtual impedance shaping and inner-loop control, the fault currents of DC lines and MMC arms can be suppressed simultaneously, which can not only alleviate the interrupting pressure of the DC circuit breaker, but also prevent the MMC from being blocked by the arm overcurrent. Theoretical analysis conclusions and the proposed strategy are verified offline by a digital time-domain simulation on Power Systems Computer Aided Design/Electromagnetic Transients including DC platform, and experiment on a real-time digital simulator platform. |
| first_indexed | 2024-03-10T05:22:06Z |
| format | Article |
| id | doaj.art-d0ed473821c741e291754d0bd0ca9a97 |
| institution | Directory Open Access Journal |
| issn | 2196-5420 |
| language | English |
| last_indexed | 2024-03-10T05:22:06Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | Journal of Modern Power Systems and Clean Energy |
| spelling | doaj.art-d0ed473821c741e291754d0bd0ca9a972023-11-23T00:00:58ZengIEEEJournal of Modern Power Systems and Clean Energy2196-54202023-01-011162003201410.35833/MPCE.2022.00057110093826Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC SystemsQin Jiang0Yan Tao1Baohong Li2Tianqi Liu3Zhe Chen4Frede Blaabjerg5Peng Wang6College of Electrical Engineering, Sichuan University,Chengdu,China,610065State Grid Jiangsu Electric Power Company Research Institute,Nanjing,China,211103College of Electrical Engineering, Sichuan University,Chengdu,China,610065College of Electrical Engineering, Sichuan University,Chengdu,China,610065Aalborg University,Department of Energy Technology,Aalborg,Denmark,9920Aalborg University,Department of Energy Technology,Aalborg,Denmark,9920School of Electrical and Electronic Engineering, Nanyang Technological University,Singapore,Singapore,639798This paper proposes a joint limiting control strategy for suppressing DC fault current and arm current in modular multilevel converter-based high-voltage direct current (MMC-HVDC) systems, which includes two target-oriented current limiting controls. To limit the DC fault current in the early fault stage, an equivalent modular multilevel converter (MMC) impedance is obtained, and its high-frequency part is reshaped by introducing virtual impedance, which is realized by adjusting the inserted submodules adaptively. Following the analysis of MMC control characteristics, the arm current limiting strategy is investigated, with results showing that the inner-loop control has significant effects on arm current and that a simple low-pass filter can reduce the arm current in the fault period. Finally, by combining the virtual impedance shaping and inner-loop control, the fault currents of DC lines and MMC arms can be suppressed simultaneously, which can not only alleviate the interrupting pressure of the DC circuit breaker, but also prevent the MMC from being blocked by the arm overcurrent. Theoretical analysis conclusions and the proposed strategy are verified offline by a digital time-domain simulation on Power Systems Computer Aided Design/Electromagnetic Transients including DC platform, and experiment on a real-time digital simulator platform.https://ieeexplore.ieee.org/document/10093826/Modular multilevel converter (MMC)high-voltage direct current (HVDC) transmissiondirect current faultfault current limitationarm current suppressionvirtual impedance |
| spellingShingle | Qin Jiang Yan Tao Baohong Li Tianqi Liu Zhe Chen Frede Blaabjerg Peng Wang Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems Journal of Modern Power Systems and Clean Energy Modular multilevel converter (MMC) high-voltage direct current (HVDC) transmission direct current fault fault current limitation arm current suppression virtual impedance |
| title | Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems |
| title_full | Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems |
| title_fullStr | Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems |
| title_full_unstemmed | Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems |
| title_short | Joint Limiting Control Strategy Based on Virtual Impedance Shaping for Suppressing DC Fault Current and Arm Current in MMC-HVDC Systems |
| title_sort | joint limiting control strategy based on virtual impedance shaping for suppressing dc fault current and arm current in mmc hvdc systems |
| topic | Modular multilevel converter (MMC) high-voltage direct current (HVDC) transmission direct current fault fault current limitation arm current suppression virtual impedance |
| url | https://ieeexplore.ieee.org/document/10093826/ |
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