Abstract
In order to protect high voltage direct current (HVDC) system from destructive consequences caused by fault current, a novel concept of HVDC system fault current limiter (DCSFCL) was proposed previously. Since DCSFCL is based on saturable core reactor theory, iron core becomes the key to the final performance of it. Therefore, three typical kinds of soft magnetic materials were chosen to find out their impact on performances of DCSFCL. Different characteristics of materials were compared and their theoretical deductions were carried out, too. In the meanwhile, 3D models applying those three materials were built separately and finite element analysis simulations were performed to compare these results and further verify the assumptions. It turns out that materials with large saturation flux density value Bs like silicon steel and short demagnetization time like ferrite might be the best choice for DCSFCL, which can be a future research direction of magnetic materials.
Highlights
Compared with traditional AC system, studies carried out by researchers around the world indicate that high-voltage direct current (HVDC) and DC grids have many advantages and are considered to be the most effective and promising technical solutions for realizing a more efficient, flexible and reliable power transmission solutions.[1,2,3,4,5,6,7]
Considering that sustainable energy sources like wind and solar energy are distributed far away from heavy load area, several HVDC lines has been built across the nation to meet heavy load demands
Even if an ideal material doesn’t exist yet, necessary characteristics for DC system fault current limiter (DCSFCL) can be derived from the investigation
Summary
Compared with traditional AC system, studies carried out by researchers around the world indicate that high-voltage direct current (HVDC) and DC grids have many advantages and are considered to be the most effective and promising technical solutions for realizing a more efficient, flexible and reliable power transmission solutions.[1,2,3,4,5,6,7] Considering that sustainable energy sources like wind and solar energy are distributed far away from heavy load area, several HVDC lines has been built across the nation to meet heavy load demands. Even if an ideal material doesn’t exist yet, necessary characteristics for DCSFCL can be derived from the investigation
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