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Jiles-Atherton Hysteresis Approach in Analyzing the Effect of Field Suppression in Saturated Iron-core Superconducting Fault Current Limiters

机译：饱和铁芯超导故障限流器的磁场抑制效应分析的Jiles-Atherton磁滞方法

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摘要

Saturated iron-core superconducting fault current limiters (SISFCL) are becoming more popular in the recent years due to their ability of reliable, effective and instantaneous fault limiting. With a superior performance than conventional current limiting methods, the SISFCL is finding its application in modern transmission lines and distribution system. In the SISFCL, the iron core is forced into saturation using a superconducting coil carrying DC current. During a fault in the system, the high fluxes set up in the AC coils interact with the DC flux, thereby reducing the flux density abruptly. This sudden change in the flux density induces a high voltage across the DC coil, which may damage the DC current source as well as the superconducting material. As a protective measure, a field suppressor unit is used that disconnects the DC supply following a fault. In this paper, a mathematical model of the SISFCL is developed considering hysteresis and the effects of the field suppressor unit have been analyzed. The paper also aims to highlight the effects on the performance of SISFCL with varying hysteresis loops of the core material.
机译：饱和铁芯超导故障电流限制器（SISFCL）近年来由于其可靠，有效和瞬时的故障限制能力而变得越来越流行。 SISFCL具有比常规限流方法更高的性能，正在现代传输线和配电系统中找到其应用。在SISFCL中，使用载有DC电流的超导线圈将铁芯强迫进入饱和状态。在系统出现故障时，交流线圈中设置的高通量会与直流通量相互作用，从而突然降低通量密度。磁通量密度的这种突然变化会在DC线圈两端感应出高压，这可能会损坏DC电流源以及超导材料。作为保护措施，使用了磁场抑制器单元，该单元可在发生故障后断开直流电源。在本文中，考虑到磁滞现象，建立了SISFCL的数学模型，并分析了场抑制器单元的效果。本文还旨在突出不同芯材磁滞回线对SISFCL性能的影响。

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