Non-inductive coil for high-temperature superconducting resistance-type current restrictor

Abstract

A non-inductive coil for a high-temperature superconducting resistance-type current restrictor includes a non-inductive cake-type bobbin consisting of a glass reinforced plastic ring (1) and a red copper connection sheet (5). The glass reinforced plastic ring (1) has an arch-shaped slot (2) with a length equal to the effective length l of the outer arc surface of the red copper connection sheet (5); the red copper connection sheet (5) is embedded in the slot (2); and the outer arc surface of the red copper connection sheet (5) is on the same annular surface of the outer arc surface of the glass reinforced plastic ring (1). Two coil clamp plates (19) are concentrically fixed on both sides of the non-inductive cake-type bobbin through countersunk screws. One ends of two equal-length parallel-wound superconducting tapes are superposed and aligned, and are welded on the red copper connection sheet (5) of the non-inductive cake-type bobbin at the same time. The two superconducting tapes are wound in parallel in the same direction, and a spacer layer is laid on the inner side of each superconducting tape in the same direction. Two lead terminals are fixed on one side of the coil on the outer edge of the lower coil clamp plate (19), and two superconducting tapes are respectively soldered on the corresponding lead terminals. The upper coil clamp plate is concentrically fixed on the upper side of the non-inductive cake-type coil through countersunk screws.

Description

technical field [0001] The invention relates to a coil for a resistance type fault current limiter, in particular to a non-inductive double-wrapped cake coil for a high temperature superconducting resistance type fault current limiter. Background technique [0002] At present, in order to adapt to the rapid development of the national economy, the continuous increase of the scale of the power grid and the continuous improvement of the degree of interconnection, my country's power grid is developing in the direction of ultra-large scale. However, the stability problem of my country's power grid has become increasingly serious, and the security and reliability of the power grid are under enormous pressure. Short-circuit faults are one of the serious faults that endanger the safety of power systems and cause huge economic losses. The resistance-type high-temperature superconducting current limiter based on the second-generation high-temperature superconducting tape uses the que...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, such as complex structure, large inner diameter, difficult machining, easy damage to high-temperature superconducting strips, and large length of a single superconducting strip, and propose a double-band winding The non-inductive pie coil structure

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