Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields
Abstract The objective of this work intends to propose a novel current interruption technology in vacuum for LVDC power systems, based on the instability of vacuum arc under composite transverse magnetic fields (TMFs). The interruption characteristics were experimentally determined in an overdamping...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-04-01
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| Series: | IET Generation, Transmission & Distribution |
| Online Access: | https://doi.org/10.1049/gtd2.12372 |
| _version_ | 1811248278708158464 |
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| author | Shaowei Liu Hui Ma Jinlong Chen Yingsan Geng Zhiyuan Liu Jianhua Wang |
| author_facet | Shaowei Liu Hui Ma Jinlong Chen Yingsan Geng Zhiyuan Liu Jianhua Wang |
| author_sort | Shaowei Liu |
| collection | DOAJ |
| description | Abstract The objective of this work intends to propose a novel current interruption technology in vacuum for LVDC power systems, based on the instability of vacuum arc under composite transverse magnetic fields (TMFs). The interruption characteristics were experimentally determined in an overdamping C‐L‐R circuit. The experimental results indicated that the DC current of 800 V/500 A could be successfully interrupted within 5 ms by the proposed technology. Moreover, the interruption process could be divided into two stages, the Stable and Unstable stages. In the Stable stage, the arc voltage linearly increased from 20 to 35 V, where the arc current was limited slightly. In the Unstable stage, the arc voltage would rapidly increase and exceed the supply voltage, where the current would be forced to zero. Finally, the double‐break LVDC vacuum switches, no matter in series or parallel, were difficult to improve the interruption capability, because of the asynchronous occurrence of the Unstable stage in series vacuum interrupters and the fast current‐commutation between parallel vacuum interrupters. This technology takes advantages of high interruption capability, short arcing time and low complexity, which is a promising solution to expand the application of vacuum switch to the LVDC power systems. |
| first_indexed | 2024-04-12T15:25:18Z |
| format | Article |
| id | doaj.art-ca48a27d4c3346b99adc984fb9adcd69 |
| institution | Directory Open Access Journal |
| issn | 1751-8687 1751-8695 |
| language | English |
| last_indexed | 2024-04-12T15:25:18Z |
| publishDate | 2022-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Generation, Transmission & Distribution |
| spelling | doaj.art-ca48a27d4c3346b99adc984fb9adcd692022-12-22T03:27:18ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952022-04-011671364137210.1049/gtd2.12372Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fieldsShaowei Liu0Hui Ma1Jinlong Chen2Yingsan Geng3Zhiyuan Liu4Jianhua Wang5State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an People's Republic of ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an People's Republic of ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an People's Republic of ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an People's Republic of ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an People's Republic of ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an People's Republic of ChinaAbstract The objective of this work intends to propose a novel current interruption technology in vacuum for LVDC power systems, based on the instability of vacuum arc under composite transverse magnetic fields (TMFs). The interruption characteristics were experimentally determined in an overdamping C‐L‐R circuit. The experimental results indicated that the DC current of 800 V/500 A could be successfully interrupted within 5 ms by the proposed technology. Moreover, the interruption process could be divided into two stages, the Stable and Unstable stages. In the Stable stage, the arc voltage linearly increased from 20 to 35 V, where the arc current was limited slightly. In the Unstable stage, the arc voltage would rapidly increase and exceed the supply voltage, where the current would be forced to zero. Finally, the double‐break LVDC vacuum switches, no matter in series or parallel, were difficult to improve the interruption capability, because of the asynchronous occurrence of the Unstable stage in series vacuum interrupters and the fast current‐commutation between parallel vacuum interrupters. This technology takes advantages of high interruption capability, short arcing time and low complexity, which is a promising solution to expand the application of vacuum switch to the LVDC power systems.https://doi.org/10.1049/gtd2.12372 |
| spellingShingle | Shaowei Liu Hui Ma Jinlong Chen Yingsan Geng Zhiyuan Liu Jianhua Wang Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields IET Generation, Transmission & Distribution |
| title | Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields |
| title_full | Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields |
| title_fullStr | Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields |
| title_full_unstemmed | Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields |
| title_short | Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields |
| title_sort | novel dc current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields |
| url | https://doi.org/10.1049/gtd2.12372 |
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