Superconducting Fault Current Limiter

Superconducting Fault Current Limiters (SFCL) are devices that protect electrical equipment in the distribution and transmission infrastructure from damaging power surges that may arise from short circuits, power generation disturbances or lightning strikes.

Superconducting Fault Current Limiter (SFCL) devices facilitate connection of distributed generation to transmission and distribution networks, where restrictions on fault level contributions are common. SFCLs are envisioned to be an integral part of ‘smart grids’ where ‘intelligent’ and ‘self-healing’ equipment will be required. Using SFCLs to reduce fault currents enables customers to continue using existing electrical infrastructure thereby avoiding or deferring costly upgrades or replacements. SFCLs' versatility increases a networks' reliability and operational flexibility without a need to revamp existing protection equipment.

The FCL is a low impedance device that leads to easier and better voltage regulation.