Status of the European Union Project FASTGRID

摘要: High voltage direct current super-grids are one attractive solution for the transmission of bulk power renewable electricity over long distances. Their protection is still an issue and superconducting fault limiters (SCFCL) offer perspectives. However, actual tapes not yet properly designed operation at high voltages (>100 kV): The electric field developed during limitation too low (approximately 50 V/m ms) limiter requires lengths tape. European project FASTGRID aims improving properties REBCO to enhance significantly (by 2-3 times) limit so economical SCFCL attractiveness. We use advanced THEVA tapes. Substantial improvements also planned on stabilizer (shunt) layer. Several shunt ways under investigations. Other improvement tape will be carried out, namely increase normal zone propagation velocity by least order magnitude, with help innovative flow diverter architecture. optimized conductor used in a module (≈1.5 kA-50 kV) tested 65 K. monitor temperature along using attached optical fibre. develop based sapphire substrate, which can tolerate very fields, range kilovolts per meter. Validated laboratory scale, this game-changing technology needs implemented industrial process. provide overview its first results.