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Pre-Energization Concept for Overhead Lines in MTDC Grids Using DCCB Internal Capacitor.
- Source :
-
IEEE Transactions on Power Delivery . Feb2022, Vol. 37 Issue 1, p155-164. 10p. - Publication Year :
- 2022
-
Abstract
- The integration of overhead lines in future MTDC grids leads to a higher fault rate compared to cables. Most of the faults are considered to be non-permanent, so that the line can be reconnected after dielectric recovery. The auto-reclosing procedure in HVDC systems reveals new challenges since multiple restrikes are possible within a short period of time. This paper proposes an auxiliary circuit for DC Circuit Breakers (DCCB) which enables to use the DCCB internal capacitor for the line pre-energization. A comprehensive description of the switchgear operations during the pre-energization sequence is provided and the fault property identification method is defined. The method is validated by simulations in a MTDC grid and a sensitivity analysis is carried out using EMTP-RV. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GRIDS (Cartography)
*CAPACITORS
*SENSITIVITY analysis
*DIELECTRICS
Subjects
Details
- Language :
- English
- ISSN :
- 08858977
- Volume :
- 37
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Delivery
- Publication Type :
- Academic Journal
- Accession number :
- 154862024
- Full Text :
- https://doi.org/10.1109/TPWRD.2021.3054599