Optimal positioning of bridge type superconducting fault current limiter in solar integrated electric power grid

Abstract

This paper addresses the stability and excessive fault current issues which arise due to the integration of distributed renewable energy sources with the main grid. The main focus of this work is to study the effects of the application of bridge type SFCL (Superconducting fault current limiter) on the suppression of excessive fault current and stability enhancement of solar integrated power system under fault condition. In this regard, we found scarce literature about the optimal position of SFCL for solar integrated power system. Thus, to bridge this gap, a typical power system with generation, transmission and distribution has been modeled in MATLAB/Simulink with solar power plant as a dispersed energy source. SFCL device has been connected at different positions while three phase fault has been introduced at three different locations. Results are evaluated to determine the best possible position of SFCL device according to fault current suppression and PV stability requirements. Consequently the strategic position of bridge type SFCL in solar connected power system is proposed and its effective performance is presented.