Pre-Energization Concept for Overhead Lines in MTDC Grids Using DCCB Internal Capacitor
| Autor: | Bertrand Raison, Marc Petit, Pascal Torwelle, Yang Yang, Trung Dung Le, Wolfgang Grieshaber, Alberto Bertinato |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
business.industry
Computer science Overhead (engineering) Electrical engineering Energy Engineering and Power Technology Fault (power engineering) Grid Line (electrical engineering) Switchgear law.invention Capacitor Identification (information) law Sensitivity (control systems) Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Power Delivery. 37:155-164 |
| ISSN: | 1937-4208 0885-8977 |
| DOI: | 10.1109/tpwrd.2021.3054599 |
| Popis: | The integration of overhead lines in future MTDC grids leads to a higher fault rate compared to cables. Most of the faults are con-sidered to be non-permanent, so that the line can be recon-nected 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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