A Comparative Study of TCSC and R-SFCL for Transient Stability Enhancement of the Nigerian 330kV Transmission Network
K. Okakwu, A. S. Alayande, F. O. Agbontaen, O. O. Ade-Ikuesan, O. E. Olabode |Pages: 161-174|

Abstract— The ever-increasing complexity of the Nigerian 330 kV transmission network has led to a deteriorating damping torque. The network is characterized with a high level of system instability that requires urgent control measures in order to save the system from collapse. In this paper, a comparative study of transient stability enhancement capability of Thyristor Controlled Series Compensator (TCSC) and three commercially available Resistive-type Superconductor Fault Current Limiter (R-SFCL) of different lengths based on Yttrium-Barium-Copper-Oxide (YBCO) and Bismuth-Strontium-CalciumCopper-Oxide Coated Conductor (BSCCO) is carried out. The analysis was conducted by simulating a three-phase fault (most severe fault) on the bus with the largest load (Ikeja-West) on the network. The results obtained showed a remarkable improvement in incorporating these devices (TCSC and R-SFCLs). In all the different lengths of the categories of R-SFCL used, the BSCCO performed better than the YBCO, while the TCSC performed better than BSCCO. The result obtained can be used to predict the transient stability of the Nigerian 330 kV transmission network.