Transient stability enhancement of multi-machine power system by parallel resonance type fault current limiter

This paper proposes the parallel resonance type fault current limiter (PRFCL) to enhance the transient stability of multi-machine power systems. The transient stability performance of the parallel resonance type FCL is compared with that of the bridge type fault current limiter (BFCL). The total kinetic energy (TKE) of the generators in the system is used to determine the transient stability enhancement index. Also, the critical clearing time has been presented as a stability limit. Simulations are performed by using the Matlab/Simulink software. Simulation results of both permanent and temporary faults at different points of the IEEE 39 bus power system indicate that the parallel resonance type FCL can enhance the transient stability of the system well. Also, the performance of the proposed parallel resonance type FCL is better than that of the bridge type FCL.