Superconducting magnet quenching detection method and superconducting magnet quenching detection device

Abstract

The invention provides a superconducting magnet quenching detection method and a superconducting magnet quenching detection device. The method comprises the following steps: detecting the voltage and current of each unit coil in real time; calculating the power difference between two adjacent unit coils, and calculating the absolute values of power differences between any unit coil and the two adjacent unit coils thereof; and if the absolute values of power differences between any unit coil and the two adjacent unit coils thereof are greater than a power quenching threshold, judging that the unit coil is in a power quenched state. Whether the power of each unit coil is quenched is detected, and the unit coils in a power quenched state are positioned accurately through comparison. Whether the voltage and temperature of each single coil are quenched is detected, and the single coils in a voltage and temperature quenched state are positioned accurately through step-by-step comparison. Electrical quantity detection and non-electrical quantity detection are combined, and the defect of a single quenching detection method is overcome. Meanwhile, a voltage correction coefficient is introduced, and the reliability of superconducting magnet quenching detection is improved greatly.

Description

technical field [0001] The invention relates to a quench detection method, in particular to a quench detection method and device for a superconducting magnet. Background technique [0002] Superconducting energy storage systems can be used in power systems to improve system stability, improve power supply quality, store electric energy and improve power output characteristics in decentralized power systems containing new energy sources such as solar energy and wind energy, and can also be used for emergency of important devices. backup power. These excellent properties of the superconducting energy storage system will bring immeasurable technical and economic benefits in the power system. While applying superconducting energy storage systems in power systems, it will also bring some problems that must be solved. Among them, the quenching of superconducting magnets is one of the key issues that affect the safe and stable operation of superconducting energy storage systems. ...

AI Technical Summary

Problems solved by technology

Based on this, in order to solve the problem of quench detection of superconducting magnets, the present invention provides a quench detection method and device for superconducting magnets to detect the power quench state of the unit coil and the voltage quench state and temperature quench of the single coil state

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