High Current 10kV DC Superconducting Transmission Lines and Grid Architecture
VEIR aims to enable the cost-effective transfer of bulk electric power (up to 400 MW) at a single voltage (10 kV) from generation to grid using high temperature superconducting (HTS) overhead and underground power lines. The team proposes to integrate VEIR’s existing distributed, evaporative liquid nitrogen cooling architecture for HTS lines with breakthroughs in two key areas (1) high ampacity (maximum current) low-loss conductors and (2) ultra-low heat leak insulation systems. The proposed project will enable the development of high current 10 kV power lines, allowing significantly more power to be carried on shorter towers and in narrower ROWs compared with conventional technology. VEIR’s proposed approach overcomes the reliability and cost challenges of previous HTS cables. VEIR’s HTS lines will enable faster integration of renewables and support more rapid electrification of end uses.
End-to-end high capacity 10kV DC overlays of AC grids could massively accelerate decarbonization of the grid by enabling transmission levels of power (200-400 MW) to be transported in distribution ROWs.