Isolated superconducting magnetic energy storage system quench detection device

Abstract

An isolated superconducting magnetic energy storage system quench detection device disclosed by the present invention comprises a signal acquisition part and a signal processing part separated from and electrically connected with the signal acquisition part, and is characterized in that the signal acquisition part comprises a Hall element, and the signal processing part comprises a compensating circuit, a signal amplifying circuit and a voltage measurement device which are connected orderly; the Hall element is electrically connected with the compensating circuit, and the signal amplifying circuit is also connected with a no-voltage zero setting circuit. The isolated superconducting magnetic energy storage system quench detection device also comprises a DC power supply module for supplying power to the modules. The isolated superconducting magnetic energy storage system quench detection device of the present invention can realize the rapid, convenient and accurate quench detection, can detect the quench indexes directly, can determine the quenching by detecting the magnetic induction intensity of an energy storage device directly, can accurately detect the quenching on the condition of not having other strong-magnetic field objects, and is not interfered easily. Meanwhile, when a magnetic energy storage system quenches, the magnetic field fluctuation is large, the criterions are obvious, and the anti-interference performance is also enhanced.

Description

technical field [0001] The invention relates to the technical field of quench detection for a superconducting magnetic energy storage system, in particular to an isolated quench detection device for a superconducting magnetic energy storage system. Background technique [0002] The zero-resistance characteristic of the superconducting magnetic energy storage device makes it have a very large power density, has the characteristics of high energy storage efficiency and fast response speed, and can provide large-capacity energy exchange and power exchange to the power system. It is of great significance to improve the security of power system. [0003] On this basis, the quench detection device can detect the quench of the superconducting energy storage device, issue an alarm, protect the system, and protect the safety of the power system. [0004] However, the existing quench detection equipment is a detection method based on bridge detection method or active power detection ...

AI Technical Summary

Problems solved by technology

[0005] 1. The versatility is not strong, and it is impossible to detect energy storage systems with different parameters

[0006] 2. Due to the complex circuit structure, the value of the quench criterion is small, and it is easy to be interfered by clutter, which has a great influence

[0007] 3. There are certain defects in the theoretical basis of the above two methods, and there are cases where it cannot be detected

[0008] 4. Since the superconducting coil is part of the measurement device, it is difficult to disassemble and assemble

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