Objective
Sustainability of energy systems goes through high penetration of renewable energy with huge volumes of electricity to transmit over long distances. The most advanced solution is the HVDC Supergrid. But fault currents remain an issue even if DC circuit breakers have emerged. These are not satisfying, whereas Superconducting Fault Current Limiters (SCFCLs) using REBCO tapes bring an attractive solution. SCFCLs have already proved their outstanding performances in MVAC systems, with a few commercial devices in service. However, present REBCO conductors cannot be readily used at very high voltages: the electrical field under current limitation is too low and leads to too long tapes and high cost. FASTGRID aims to improve and modify the REBCO conductor, in particular its shunt, in order to significantly enhance (2 to 3 times) the electric field and so the economical SCFCL attractiveness. A commercial tape will be upgraded to reach a higher critical current and enhanced homogeneity as compared to today’s standards. For safer and better operation, the tape’s normal zone propagation velocity will be increased by at least a factor of 10 using the patented current flow diverter concept. The shunt surface will also be functionalized to boost the thermal exchanges with coolant. This advanced conductor will be used in a smart DC SCFCL module (1 kA – 50 kV). This one will include new functionalities and will be designed as sub-element of a real HVDC device. In parallel to this main line of work, developments will be carried out on a promising breakthrough path: ultra high electric field tapes based on sapphire substrates. FASTGRID will bring this to the next levels of technology readiness.
In conclusion, FASTGRID project aims at improving significantly existing REBCO conductor architecture to make SCFCLs economically attractive for HVDC Supergrids. However, availability of such an advanced conductor will have an impact on virtually all other applications of HTS tapes.
Fields of science
- engineering and technologymaterials engineeringfibers
- engineering and technologyenvironmental engineeringenergy and fuelsrenewable energy
- engineering and technologymaterials engineeringcomposites
- engineering and technologymaterials engineeringcoating and films
- natural sciencesphysical sciencesopticsfibre optics
Programme(s)
Funding Scheme
IA - Innovation actionCoordinator
75794 Paris
France
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Participants (12)
Legal entity other than a subcontractor which is affiliated or legally linked to a participant. The entity carries out work under the conditions laid down in the Grant Agreement, supplies goods or provides services for the action, but did not sign the Grant Agreement. A third party abides by the rules applicable to its related participant under the Grant Agreement with regard to eligibility of costs and control of expenditure.
38031 Grenoble Cedex 1
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69100 Villeurbanne
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28006 Madrid
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Participation ended
08210 Barbera Del Valles
The organization defined itself as SME (small and medium-sized enterprise) at the time the Grant Agreement was signed.
85737 Ismaning
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The organization defined itself as SME (small and medium-sized enterprise) at the time the Grant Agreement was signed.
20134 Milano
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H3T 1J4 Montreal
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69978 Tel Aviv
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76131 Karlsruhe
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841 04 Bratislava
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1015 Lausanne
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81243 Bratislava
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