Progressive Fault Isolation and Grid Restoration Strategy for MTDC Networks
| Autor: | Carlos E. Ugalde-Loo, Jun Liang, Carl David Barker, Rui Dantas, Andrzej Adamczyk, Robert Whitehouse |
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| Rok vydání: | 2018 |
| Předmět: |
Ac circuit
Downtime Engineering business.industry 020209 energy Electrical engineering Energy Engineering and Power Technology 02 engineering and technology Grid Line (electrical engineering) Fault detection and isolation Reliability engineering Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Dc fault Circuit breaker |
| Zdroj: | IEEE Transactions on Power Delivery. 33:909-918 |
| ISSN: | 1937-4208 0885-8977 |
| DOI: | 10.1109/tpwrd.2017.2720844 |
| Popis: | A multi-terminal dc (MTDC) grid has a number of advantages over traditional ac transmission. However, dc protection is still one of the main technical issues holding back the expansion of point-to-point dc links to MTDC networks. Most dc protection strategies are based on dc circuit breakers (DCCBs); however, DCCBs are still under development and their arrival to the market will come at an unclear time and cost. Conversely, ac circuit breakers (ACCBs) are readily available and represent a more economic alternative to protect dc networks. Following this line, a protection strategy for MTDC grids is proposed in this paper. This uses ACCBs for dc fault current clearing and fast dc disconnectors for fault isolation. The faulty link is correctly discriminated and isolated while communication links are not required. This strategy contributes to a reduced network outage period as the non-faulty links are out of operation for a relatively short period of time and are restored in a progressive manner. The effectiveness of the proposed strategy is tested in PSCAD/EMTDC for pole-to-ground and pole-to-pole faults. |
| Databáze: | OpenAIRE |
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