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Projects: Projects for Investigator
Reference Number ETI-EN1009
Title Pre-Saturated Core Fault Current Limiter
Status Completed
Energy Categories Other Power and Storage Technologies(Electricity transmission and distribution) 100%;
Research Types Applied Research and Development 100%
Science and Technology Fields ENGINEERING AND TECHNOLOGY (Electrical and Electronic Engineering) 100%
UKERC Cross Cutting Characterisation Not Cross-cutting 100%
Principal Investigator Project Contact
No email address given
GridOn, Israel
Award Type Institute Project
Funding Source ETI
Start Date 17 June 2011
End Date 14 July 2017
Duration 73 months
Total Grant Value £4,000,000
Industrial Sectors Technical Consultancy
Region Overseas
Programme Energy Storage and Distribution
Investigators Principal Investigator Project Contact , GridOn, Israel (99.998%)
  Other Investigator Project Contact , E.ON UK (formerly PowerGen) (0.001%)
Project Contact , UK Power Networks (0.001%)
Web Site
Objectives Fault current levels are becoming a significant barrier to the installation of low-carbon and other distributed generation. Management of these fault levels is also a key enabler for the growth of smart distribution systems, offering improved operation, flexibility and efficiency.

This projects aims were to develop and demonstrate a pre-saturated core fault current limiter device (PCFCL), to reduce the impact of faults on electricity distribution networks.

Abstract Achievements :
  • Development and demonstration of a pre-saturated core fault current limiter
  • Product design offers 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, where it has performed excellently.

Designed by GridON, this pre-saturated core fault current limiter uses 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 is based on combining industry standard proven transformer technology and GridON's concept of magnetic flux alteration to saturate the iron core.

The limiter is fully scalable for use at voltage levels on both distribution and transmission systems. Its design removes the need for superconducting components or associated cryogenic systems.

Publications (none)
Final Report (none)
Added to Database 16/08/18