Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization
The calculation of the short-circuit current is an important basis for fault detection and equipment selection in the DC distribution system. This paper proposes a linearized model for modular multilevel converter (MMC) considering different grounding methods and different failure scenarios. This mo...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-03-01
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| Series: | Frontiers in Energy Research |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2021.634232/full |
| _version_ | 1818617590177595392 |
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| author | Peixiao Sun Zaibin Jiao Hanwen Gu |
| author_facet | Peixiao Sun Zaibin Jiao Hanwen Gu |
| author_sort | Peixiao Sun |
| collection | DOAJ |
| description | The calculation of the short-circuit current is an important basis for fault detection and equipment selection in the DC distribution system. This paper proposes a linearized model for modular multilevel converter (MMC) considering different grounding methods and different failure scenarios. This model can be used in different fault conditions before MMC’s block. Under different fault forms, the model has different manifestations. This paper analyzes and models the DC distribution network with two types of faults: inter-pole short circuit and single-pole grounding short circuit. Among them, the modeling and analysis of single-pole grounding short-circuit uses the method of common- and differential-mode (CDM) transformation. To solve such a model, an analytical calculation method is proposed. As a mean of evaluating the effectiveness and accuracy of the proposed model, the analytical calculation solution is compared to the solution produced by PSCAD/EMTDC. A comparison of the results reveals the efficacy of the proposed model. |
| first_indexed | 2024-12-16T17:08:07Z |
| format | Article |
| id | doaj.art-e1ce54f727f9490db826a4afbdfdde75 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-12-16T17:08:07Z |
| publishDate | 2021-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-e1ce54f727f9490db826a4afbdfdde752022-12-21T22:23:30ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2021-03-01910.3389/fenrg.2021.634232634232Calculation of Short-Circuit Current in DC Distribution System Based on MMC LinearizationPeixiao SunZaibin JiaoHanwen GuThe calculation of the short-circuit current is an important basis for fault detection and equipment selection in the DC distribution system. This paper proposes a linearized model for modular multilevel converter (MMC) considering different grounding methods and different failure scenarios. This model can be used in different fault conditions before MMC’s block. Under different fault forms, the model has different manifestations. This paper analyzes and models the DC distribution network with two types of faults: inter-pole short circuit and single-pole grounding short circuit. Among them, the modeling and analysis of single-pole grounding short-circuit uses the method of common- and differential-mode (CDM) transformation. To solve such a model, an analytical calculation method is proposed. As a mean of evaluating the effectiveness and accuracy of the proposed model, the analytical calculation solution is compared to the solution produced by PSCAD/EMTDC. A comparison of the results reveals the efficacy of the proposed model.https://www.frontiersin.org/articles/10.3389/fenrg.2021.634232/fullDC distribution systemshort-circuit current calculationMMClinearizationcommon- and differential-mode |
| spellingShingle | Peixiao Sun Zaibin Jiao Hanwen Gu Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization Frontiers in Energy Research DC distribution system short-circuit current calculation MMC linearization common- and differential-mode |
| title | Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization |
| title_full | Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization |
| title_fullStr | Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization |
| title_full_unstemmed | Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization |
| title_short | Calculation of Short-Circuit Current in DC Distribution System Based on MMC Linearization |
| title_sort | calculation of short circuit current in dc distribution system based on mmc linearization |
| topic | DC distribution system short-circuit current calculation MMC linearization common- and differential-mode |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2021.634232/full |
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