Short‐circuit faults are the most commonly occurring faults in an electrical power system. Traditionally, circuit breakers, fuses or similar protective devices are used to safeguard sensitive equipment from these faults by disconnecting the supply. An alternative approach for protection against short‐circuit faults is using fault current limiters (FCL), which suppress the large magnitude currents created by the fault to manageable values. This fault limiting action not only prevents damage to delicate equipment but also aids in providing uninterrupted power supply to the consumers. A promising FCL design is the saturated iron‐core superconducting fault current limiter (SISFCL), which uses the property of its ferromagnetic core to suppress high‐magnitude currents. In this paper, the performance of an open‐core type three‐phase SISFCL is analysed in response to variation of three model parameters. The parametric analysis is performed on the SISFCL under the effects of a symmetric‐type three line to ground (LLLG) fault and an asymmetric‐type single line to ground (SLG) fault. A finite‐element modelling (FEM) approach is used in the design and simulation of the model in ANSYS Maxwell software. Following the parametric analysis, an optimization of the design of the SISFCL is performed using the Quasi‐Newton Gradient Search method, in order to improve its performance against both LLLG and SLG faults.

中文翻译：

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开放式三相SISFCL的参数分析和优化

短路故障是电力系统中最常见的故障。传统上，断路器，保险丝或类似的保护装置通过断开电源来保护敏感设备免受这些故障的影响。防止短路故障的另一种方法是使用故障电流限制器（FCL），它将故障产生的大电流抑制到可管理的值。这种故障限制措施不仅可以防止损坏精密的设备，而且还可以为用户提供不间断的电源。一项有前途的FCL设计是饱和铁芯超导故障电流限制器（SISFCL），它利用其铁磁芯的特性来抑制高强度电流。在本文中，根据三个模型参数的变化，分析了开式三相SISFCL的性能。在对称型三线接地（LLLG）故障和非对称型单线接地（SLG）故障的影响下，对SISFCL进行参数分析。ANSYS Maxwell软件在模型的设计和仿真中使用了有限元建模（FEM）方法。在进行参数分析之后，使用准牛顿梯度搜索方法对SISFCL进行了设计优化，以提高其针对LLLG和SLG故障的性能。ANSYS Maxwell软件在模型的设计和仿真中使用了有限元建模（FEM）方法。在进行参数分析之后，使用准牛顿梯度搜索方法对SISFCL进行了设计优化，以提高其针对LLLG和SLG故障的性能。ANSYS Maxwell软件在模型的设计和仿真中使用了有限元建模（FEM）方法。在进行参数分析之后，使用准牛顿梯度搜索方法对SISFCL进行了设计优化，以提高其针对LLLG和SLG故障的性能。