Quench-detection circuit of high-temperature superconducting magnet

A high-temperature superconducting and detection circuit technology, which is applied in the direction of measuring electricity, measuring electrical variables, and measuring devices, can solve the problems of permanent damage to high-temperature superconducting magnets, damage to high-temperature superconducting magnets, and slow quench propagation speed, etc., to achieve The effect of fast speed, improved accuracy, and reduced influence of interference signals
CN101446610BActive Publication Date: 2011-08-17CHINA ELECTRIC POWER RES INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA ELECTRIC POWER RES INST
Publication Date
2011-08-17

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Abstract

The invention relates to a quench-detection circuit of a high-temperature superconducting magnet, in particular to a circuit for detecting whether quench occurs to the high-temperature superconducting magnet or not. The circuit comprises the high-temperature superconducting magnet, a correction circuit, an optocoupler isolation circuit, a differential operational amplifier circuit, an absolute value circuit, an analog multiplication circuit, a current-voltage conversion circuit, a filter circuit, comparison circuits, an output circuit, and the like, wherein, the high-temperature superconducting magnet is formed by connecting a plurality of high-temperature superconducting coils in series, each two high-temperature superconducting coils are taken as one group for carrying out the comparison, output ends of each group of the comparison circuits are connected in parallel, a quench signal is output, and the quench signal is input to a protection circuit, thereby avoiding the high-temperature superconducting magnet from being damaged.
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Description

technical field

[0001] The invention relates to a quench detection circuit for high-temperature superconducting magnets. More specifically, the present invention relates to a circuit for detecting whether a quench has occurred in a high temperature superconducting magnet. Background technique

[0002] Superconducting power devices in power systems will inevitably encounter various dynamic processes such as system short-circuit faults, and withstand the impact of short-circuit large currents and unbalanced currents. The superconducting magnets in superconducting power devices may suffer from excessive short-circuit Quenched by current action. The quenching of superconducting magnets not only changes the electrical parameters of superconducting power devices, but also has a bad influence on the safe, stable and economical operation of power systems.

[0003] For the high-temperature superconducting magnet itself, the high-temperature superconducting magnet can only exhibit s...

Claims

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