Permanent magnet fault current limiter device performance improvement

الملخص

The power system short-circuit current is at a critical level, which endangers the security, stability and reliability of the power system. Hence, how to restrict the short-circuit current has become an obligatory issue in the modernization of power grid system. This paper looks at the performance improvement of the Permanent magnet Fault Current Limiter (PMFCL) device. It presents the influence of AC coil span across the iron core on the performance enhancement of the PMFCL device. The modelling scheme has been performed on three PMFCL models of 0.033m, 0.066m and 0.099m AC coil span.  

A prototype of 0.099m AC coil span has been built and tested. The 3DFEM simulation and Lab measured results for the prototype were adopted as standard results. These results were used as a baseline for a comparison with 0.033m and 0.066m AC coils span FEM models. The practical results ensured the validity of the FEM software simulation tool, test the concept of the PMFCL device and revealed the effect of AC coil span across the core on the performance of the PMFCL device working operation.