Zhao, Xibei, Li, Gen ORCID: https://orcid.org/0000-0002-0649-9493, Xu, Jianzhong and Yuan, Jinsha 2023. Study on clamping type DC circuit breaker with short fault isolation time and low energy dissipation. CSEE Journal of Power and Energy Systems 9 (5) , pp. 1743-1752. 10.17775/CSEEJPES.2020.05180 |
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Abstract
The development of DC grids faces challenges from DC fault protection. The conventional DC circuit breaker (DCCB) employs metal-oxide varistor (MOV) to isolate the faulted line, in which the fault isolation process is coupled with the energy dissipation process. In this study, a clamping type DCCB (CTCB) uses internal capacitors to clamp the converter voltage is proposed. Thanks to the proposed configuration, fault isolation and energy dissipation are decoupled, resulting in a fast fault isolation and low energy dissipation compared to the conventional DCCB. The working principle of the proposed CTCB is presented and verified in a DC grid simulation model. A comparison is made with the traditional DCCB. The fault isolation time can be reduced by 34.5 %. The dissipated energy can be reduced by 17.4 %. The energy dissipation power can be reduced by 76.2 %.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Engineering |
Publisher: | IEEE |
ISSN: | 2096-0042 |
Date of First Compliant Deposit: | 22 March 2021 |
Date of Acceptance: | 3 February 2021 |
Last Modified: | 25 Oct 2023 15:00 |
URI: | https://orca.cardiff.ac.uk/id/eprint/139995 |
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