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Fault current limiters using superconductors.

Author(s) : NORRIS W. T., POWER A.

Summary

Fault current limiters on power systems are to reduce damage by heating and electro-mechanical forces, to alleviate duty on switchgear used to clear the fault, and to mitigate disturbance to unfaulted parts of the system. A basic scheme involves a super-resistor which is a superconductor being driven to high resistance when fault current flows. Current may be commuted from superconductor to an impedance in parallel, thus reducing the energy dispersed at low temperature and saving refrigeration. In a super-shorted transformer the ambient temperature primary carries the power system current; the superconductive secondary goes to a resistive condition when excessive currents flow in the primary.

Details

  • Original title: Fault current limiters using superconductors.
  • Record ID : 1998-2119
  • Languages: English
  • Publication date: 1997/10
  • Source: Source: Cryogenics/Proc. LTEC, Southampton
    vol. 37; n. 10; 657-665; 14 fig.; 1 tabl.; 15 ref.; append.

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