Optimized design of the saturated iron core superconducting fault current limiter

The DC coil, AC coil, and the iron core are key components for a saturated iron core superconducting fault current limiter (SI-SFCL), which determine the device performance in fault current limiting as well as in normal power transmission. They are also have great impact on the size of the device, which are considerable factors influencing the utility´s acceptance for the device. We have investigated how the design parameters of the DC coil, AC coil, and the iron core are co-related and how they affect the functional characteristic of the SI-SFCL using Ansoft simulation. The methods used to optimize the performances and size are developed and used on the parametric optimization of the 500 kV SI-SFCL.