Abstract
This paper presents the loss analysis on the saturated iron-core superconducting fault current limiter (SISFCL) for a VSC-HVDC transmission system. The numerical model of SISFCL as well as its loss calculation on superconducting parts were carried out by the finite-element method (FEM) using the H-formulation merged into the commercial package COMSOL. The SISFCL model was established for a practical ±10 kV VSC-HVDC system, and the fault current situation was simulated using the PSCAD with a SISFCL. The capability of fault current limiting was verified using the analysis of electromagnetic characteristics, and the corresponding patterns of magnetic field in the iron-core were studied. During the process of fault current limiting, the instantaneous power losses in the superconducting components were studied with the increasing DC bias current. Even in a DC grid system, results proved there were considerable amounts of losses occurred in the superconducting parts, when the SISFCL encountered the fault currents.
| Original language | English |
|---|---|
| Article number | 9454391 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 31 |
| Issue number | 8 |
| DOIs | |
| State | Published - Nov 2021 |
Keywords
- AC loss
- Voltage source converter based high voltage direct current (VSC-HVDC)
- finite element method (FEM)
- high-temperature superconducting (HTS) coil
- saturated iron-core superconducting fault current limiter (SISFCL)
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