Transient Stability Improvement using Resistive-type Superconducting Fault Current Limiters (R-SFCL)

Abstract

The rapid growth in the demand for electrical energy due to the astronomic growth in population has led to increase in the system fault current levels. This increase in fault current if not properly checked, could lead to system collapse. Superconducting Fault Current Limiters (SFCLs) are used in power system networks to mitigate against high fault current levels. In this study, the transient stability enhancement capability of three commercially available Resistive-type Superconducting Fault Current Limiters (R-SFCLs) based on Yttrium-Barium-Copper-Oxide (YBCO) and Bismuth-Strontium-Calcium-Copper-Oxide (BSCCO) Coated Conductors of different lengths were simulated. The test case was the Nigeria 330kV transmission network. The Runge-Kutta method was used to solve the differential equations characterizing the swing equations of the generators. The proposed method shows the effectiveness of the SFCL in enhancing transient stability of a Multi-Machine System.