Resistive superconducting fault current limiter
First Claim
1. A resistive superconducting fault current limiter, comprising:
- a superconducting fault current limiting module;
a magnetic field applier which surrounds a periphery of the superconducting fault current limiting module, and applies a magnetic field to the superconducting fault current limiting module to quench the superconducting fault current limiting module when a fault current is generated in a power system circuit; and
a current transformer, comprising a secondary coil electrically connected in parallel with the magnetic field applier, which outputs a driving voltage, induced by a fault current generated in the power system circuit, to the magnetic field applier, whereby the magnetic field applier generates the magnetic field without connecting to the power system circuit and only when the fault current is generated in the power system circuit.
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Accused Products
Abstract
Disclosed is a resistive superconducting fault current limiter capable of enhancing a current of a superconducting device thereof, capable of preventing heat generated at a linear coil, capable of removing a magnetic field generated through the linear coil when a normal current is applied to a circuit of a power system, and capable of using not only a BISCCO based superconducting device but also a YBCO based superconducting device with using a magnet generating device separated from the circuit of the power system so that a current of the power system can not flow to the linear coil of the resistive superconducting fault current limiter when a normal current flows to the power system. The resistive superconducting fault current limiter comprises: a superconducting fault current limiting module composed of at least one superconducting fault current limiting device; a magnetic field applying unit installed to surround a periphery of the superconducting fault current limiting module as a circular shape, for applying a magnetic field to the superconducting fault current limiting device; and a current transformer for inducing a current converted from the current flowing on the circuit of the power system by a non-contact and thereby supplying the induced current to the magnetic field applying unit.
18 Citations
10 Claims
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1. A resistive superconducting fault current limiter, comprising:
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a superconducting fault current limiting module; a magnetic field applier which surrounds a periphery of the superconducting fault current limiting module, and applies a magnetic field to the superconducting fault current limiting module to quench the superconducting fault current limiting module when a fault current is generated in a power system circuit; and a current transformer, comprising a secondary coil electrically connected in parallel with the magnetic field applier, which outputs a driving voltage, induced by a fault current generated in the power system circuit, to the magnetic field applier, whereby the magnetic field applier generates the magnetic field without connecting to the power system circuit and only when the fault current is generated in the power system circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification