Modeling method for nonlinear analysis of high-temperature superconducting magnet

A technology of nonlinear analysis and modeling method, applied in the modeling field of nonlinear analysis of high-temperature superconducting magnets, can solve problems such as inaccurate response characteristics of superconducting magnets, achieve comprehensive analysis of dynamic response performance, avoid response characteristic errors, The effect of the simplicity of the modeling process
CN106897487AActive Publication Date: 2017-06-27HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Publication Date
2017-06-27

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Abstract

The invention provides a modeling method for nonlinear analysis of a high-temperature superconducting magnet. The method comprises the steps of building a PDE model for an electromagnetic thermal coupling analysis according to an actual magnet model; calculating dynamic inductance and resistance equivalent parameters according to a solving result of the PDE model; obtaining key parameters such as a critical current, a maximum temperature rise and the like of the superconducting magnet; and according to a mathematic relationship between the inductance and resistance parameters and a voltage drop at two ends of the magnet, performing equivalent processing on the magnet model by utilizing a controlled current source, wherein at any moment in simulation, the equivalent inductance, the equivalent resistance and the key parameters of the magnet are all related to a current state of the magnet, and a nonlinear E-J characteristic of the superconducting magnet is fully considered. According to the modeling method, mutual influence of a system control module and the superconducting magnet can be reflected, so that the influence of a control algorithm on a response characteristic of the superconducting magnet is analyzed. Compared with a conventional method for making the superconducting magnet equivalent to pure inductance, the modeling method has the characteristic of higher precision; the modeling process is not complex; excessive parameters are not introduced; and a state of the superconducting magnet can be monitored in real time.
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Description

technical field

[0001] The invention belongs to the technology of high-temperature superconducting magnets, and in particular relates to a modeling method for nonlinear analysis of high-temperature superconducting magnets. Background technique

[0002] With the increase of the capacity of the power system, the complexity of the system structure, and the improvement of power users' requirements for power supply quality, the power system has highlighted several technical problems in terms of power safety, high-quality power supply, and high-efficiency power transmission. Superconducting power technology is a forward-looking technology that has attracted widespread attention at home and abroad. The introduction of it into the power system will provide a new technical approach to solve the inherent technical problems of the power system. At present, superconducting power technology has entered a period of rapid development. Some superconducting power products, especially high-te...

Claims

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