Improvement of Transient Stability in Power System Using Rotating Disc Type Passive Magnetic Fault Current Limiter

A revolving disc-type Permanent Magnet fault Current Limiter (PMFCL) is proposed as a means of improving the transient stability of a Single Machine Infinite Bus (SMIB) with double circuit transmission lines. This new configuration of the PMFCL can restrict the fault current without affecting the normal condition of the system. The impedance offered by the device can be regulated by changing the rotation of the disc. The stability limit of the power system can be also controlled by regulating the impedance of the PMFCL. The PMFCL design and Finite-element analysis (FEA) was carried out using ANSYS MAXWELL software and the stability analysis on Single Machine Infinite Bus (SMIB) systems including the proposed PMFCL unit is carried out in MATLAB SIMULINK.