التفاصيل البيبلوغرافية
| العنوان: |
A 3-D Finite-Element Method Approach for Analyzing Different Short Circuit Types in a Saturated Iron Core Fault Current Limiter. |
| المؤلفون: |
Santos, Gabriel dos, Martins, Flavio Goulart R., Sass, Felipe, Sotelo, Guilherme Goncalves, Morandi, Antonio, Grilli, Francesco |
| المصدر: |
IEEE Transactions on Applied Superconductivity; Sep2022, Vol. 32 Issue 6, p1-13, 13p |
| مصطلحات موضوعية: |
FAULT current limiters, SUPERCONDUCTING fault current limiters, SHORT circuits, FINITE element method, MAGNETIC flux density, SUPERCONDUCTING coils, IRON-based superconductors, ELECTRIC power systems |
| مستخلص: |
In several cases, substations have become incapable of supporting faults due to increase in short-circuit levels. Fault current limiters (FCLs) are a potential solution for this problem. Among several FCL topologies presented in the literature, the saturated iron core superconducting fault current limiter (SIC-SFCL) has shown promising results in real tests in substations. In this context, this article presents the impacts of different kinds of short circuit on the SIC-SFCL device. To reproduce various types of fault, the SIC-SFCL is modeled in a 3-D framework considering both ferromagnetic and superconducting nonlinearities. Moreover, the proposed 3-D finite-element method model can couple the SIC-SFCL to the electric power system, also representing the electrical grid and the protection systems. For this investigation, the dc-bias superconducting coil’s normalized current density and the iron cores’ magnetic flux density are examined in light of different kinds of short circuit. The simulations are compared with measurements in a bench prototype, showing a maximum error of 16.5%. Furthermore, different types of short circuit are investigated and compared, which is possible only using a 3-D model. The highest limitation occurs in the phase-to-phase short-circuit case. In the dc circuit of the SIC-SFCL, the highest transient period happens in the single-phase short circuit. Finally, the phase-to-phase fault presents the highest dc current during the transient. [ABSTRACT FROM AUTHOR] |
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