Modelling and Analysis on AC Loss of HTS Tapes With Magnetic Substrate Under Harmonic Current in Power Systems

Due to the wide application of large-scale non-linear loads and switching power electronic devices, current in the power grid is often mixed with many harmonic components. This paper numerically analyzed the influences of current harmonics on the AC loss of HTS tapes with magnetic substrate, considering the impacts of different harmonic orders and different harmonic distortion rates. The AC loss of the HTS tape with the magnetic substrate is analyzed under two conditions: Case 1 transport current; Case 2 external magnetic field. The study involves the influence of current harmonics on the AC loss of HTS tapes, which can lay theoretical foundations for practical industrial applications with superconducting devices in power systems.