DC superconducting fault current limiter
A fault current limiter and superconducting technology, applied in protection switch operation/release mechanisms, electrical components, emergency protection circuit devices, etc., can solve problems such as long response time of circuit breakers, unfavorable power system rapid protection, overvoltage, etc. Achieve the effect of simple structure, high reliability and short response time
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[0017] Depend on figure 1 , figure 2 As shown, the DC power supply of the load circuit is E 1 , the load resistance is R 1 , on the toroidal core 1, two superconducting coupling coils W with equal inductance are wound 1 , W 2 , one of the superconducting coils W 1 As a current-limiting coil, both ends are connected to the load circuit, and the other superconducting coil W 2 As a bias coil, with a DC power supply E 2 and resistor R 2 Phase series, superconducting coupled coil W 1 , W 2 Cool with a cooling device.
[0018] Coupling coil W 1 , W 2 It can be wound with superconducting materials (such as low-temperature superconductor NbTi, high-temperature superconductor Bi2223 / Ag, etc.). The cooling device can be cooled by a cryogenic container filled with a coolant, and the coolant and cooling temperature are determined according to the superconducting material used.
[0019] Such as image 3 as shown, image 3 It is an existing cooling device, wherein: 2 is the ...
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