- Development and demonstration of a pre-saturated core fault current limiter
- Product design offered advantages of a non-superconducting pre-saturated core fault current limiter with instant response and recovery and a small footprint based on established transformer design and build process
- Commissioned into service in May 2013 at a UK Power Networks primary substation in Newhaven
Designed by GridON, this pre-saturated core fault current limiter used a direct current coil to magnetically saturate the iron core, providing a very low impedance during normal operation and a high impedance in response to a network fault. It was based on combining industry standard proven transformer technology and GridON's concept of magnetic flux alteration to saturate the iron core.
The limiter was fully scalable for use at voltage levels on both distribution and transmission systems. Its design removed the need for superconducting components or associated cryogenic systems.
It was commissioned into service in May 2013 at a UK Power Networks main substation in Newhaven. Its performance in service was excellent.
The £4.5 million project was completed in 2017.
To visit the GridON website please click here.
To view a booklet about the Pre-Saturated Fault Current Limiter please click here.
The final report from this project can be found here.