Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker
The analysis and calculation of the short-circuit fault current in the DC grid is of great significance to the design and configuration of the converter station and DC circuit breaker parameters. The existing flexible DC system not only includes the modular multilevel converter (MMC) converter, but...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/6/1347 |
| _version_ | 1811297763798810624 |
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| author | Haipeng Jia Jingyuan Yin Tongzhen Wei Qunhai Huo Jinke Li Lixin Wu |
| author_facet | Haipeng Jia Jingyuan Yin Tongzhen Wei Qunhai Huo Jinke Li Lixin Wu |
| author_sort | Haipeng Jia |
| collection | DOAJ |
| description | The analysis and calculation of the short-circuit fault current in the DC grid is of great significance to the design and configuration of the converter station and DC circuit breaker parameters. The existing flexible DC system not only includes the modular multilevel converter (MMC) converter, but also needs power equipment such as the fault current limiter and DC circuit breaker. Therefore, the system modeling and short circuit calculation of the multi-terminal DC system after adding the DC circuit breaker are also of great significance for the design of DC power system parameters and the grid troubleshooting ability. In this paper, firstly, the parameters of the four-terminal DC system of the modular multilevel converter (MMC) are simplified, and the analytical solution of the short circuit fault current of the multi-terminal DC system is given. Then, the external characteristics of the cascaded hybrid DC circuit breaker are modeled. Based on the equivalent circuit of the fault current in different stages, the short circuit calculation method of four-terminal MMC system with DC circuit breaker is obtained. This method can effectively describe the overall trend of fault current and provide the basis for the configuration of DC line protection settings and DC circuit breaker related parameters. |
| first_indexed | 2024-04-13T06:09:03Z |
| format | Article |
| id | doaj.art-a6d116f3ec0d42cfaa19d677ac5c5151 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T06:09:03Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-a6d116f3ec0d42cfaa19d677ac5c51512022-12-22T02:59:08ZengMDPI AGEnergies1996-10732020-03-01136134710.3390/en13061347en13061347Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit BreakerHaipeng Jia0Jingyuan Yin1Tongzhen Wei2Qunhai Huo3Jinke Li4Lixin Wu5Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaChina Energy Engineering Group, Jiangsu Power Design Institute Co., LTD, Nanjing 211102, ChinaInstitute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, ChinaThe analysis and calculation of the short-circuit fault current in the DC grid is of great significance to the design and configuration of the converter station and DC circuit breaker parameters. The existing flexible DC system not only includes the modular multilevel converter (MMC) converter, but also needs power equipment such as the fault current limiter and DC circuit breaker. Therefore, the system modeling and short circuit calculation of the multi-terminal DC system after adding the DC circuit breaker are also of great significance for the design of DC power system parameters and the grid troubleshooting ability. In this paper, firstly, the parameters of the four-terminal DC system of the modular multilevel converter (MMC) are simplified, and the analytical solution of the short circuit fault current of the multi-terminal DC system is given. Then, the external characteristics of the cascaded hybrid DC circuit breaker are modeled. Based on the equivalent circuit of the fault current in different stages, the short circuit calculation method of four-terminal MMC system with DC circuit breaker is obtained. This method can effectively describe the overall trend of fault current and provide the basis for the configuration of DC line protection settings and DC circuit breaker related parameters.https://www.mdpi.com/1996-1073/13/6/1347mmchybrid dc circuit breakermulti-terminal flexible dc systemshort circuit current calculation |
| spellingShingle | Haipeng Jia Jingyuan Yin Tongzhen Wei Qunhai Huo Jinke Li Lixin Wu Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker Energies mmc hybrid dc circuit breaker multi-terminal flexible dc system short circuit current calculation |
| title | Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker |
| title_full | Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker |
| title_fullStr | Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker |
| title_full_unstemmed | Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker |
| title_short | Short-Circuit Fault Current Calculation Method for the Multi-Terminal DC Grid Considering the DC Circuit Breaker |
| title_sort | short circuit fault current calculation method for the multi terminal dc grid considering the dc circuit breaker |
| topic | mmc hybrid dc circuit breaker multi-terminal flexible dc system short circuit current calculation |
| url | https://www.mdpi.com/1996-1073/13/6/1347 |
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