Abstract
This article studies the protection of DC grid based on full bridge (FB) MMC and mechanical DC circuit breakers. A four terminal DC grid cropped from the CIGRE B4 DC grid test system is used as the studied system. Three level cascaded controllers are installed at each FB MMC, along with central DC grid dispatcher. In the proposed approach FB MMCs are operated through DC faults exploiting FB MMC capability to control DC fault currents. Mechanical DC CB are selected because of their low costs and since speed of protection operation is not critical with FB MMC. Differential DC grid protection method is adopted for its good robustness and suitability for wide range of fault impedances. EMTP-RV simulation of complete system under DC faults is provided to confirm validity of the proposed method.
| Original language | English |
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| Title of host publication | 2017 IEEE Power and Energy Society General Meeting, PESGM 2017 |
| Publisher | IEEE Explore |
| Pages | 1-5 |
| Number of pages | 5 |
| Volume | 2018-January |
| ISBN (Electronic) | 9781538622124 |
| DOIs | |
| Publication status | Published - 29 Jan 2018 |
| Event | 2017 IEEE Power and Energy Society General Meeting, PESGM 2017 - Chicago, United States Duration: 16 Jul 2017 → 20 Jul 2017 http://www.pes-gm.org/2017/ (2017 IEEE PES General Meeting) |
Publication series
| Name | Power & Energy Society General Meeting |
|---|---|
| ISSN (Electronic) | 1944-9933 |
Conference
| Conference | 2017 IEEE Power and Energy Society General Meeting, PESGM 2017 |
|---|---|
| Country/Territory | United States |
| City | Chicago |
| Period | 16/07/17 → 20/07/17 |
| Internet address |
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Keywords
- DC Circuit Breaker
- DC grid
- Full bridge MMC
- Hybrid MMC
- Modular multilevel converter
