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DC-side fault current management in extended multiterminal-HVDC-grids

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4 Author(s)
D. Schmitt ; University of Bundeswehr Munich, Germany, Institute of Power Electronics and Control, Werner-Heisenberg-Weg 39, 85577 Neubiberg ; Y. Wang ; Th. Weyh ; R. Marquardt

The global need for reliable and efficient energy supplies and the necessary shift from fossil fuels to regenerative sources imposes great challenges for improved electric power transmission. Extended HVDC-SuperGrids, covering large areas and distances, are considered to lead to very attractive solutions. While recent progress of power electronics has enabled suitable and extremely efficient converters, the best structure of a large DC-grid and the remaining other key components are still under investigation. This paper focuses on main problems, especially handling of fault currents or DC-short circuits in the grid. The interaction of the key components - Modular Multilevel Converters and DC-circuit breakers - is investigated.

Published in:

Systems, Signals and Devices (SSD), 2012 9th International Multi-Conference on

Date of Conference:

20-23 March 2012