Superconducting Fault Current Limiter For Energy Storage Protection Under Grounded Faults In A Micro Grid

Abstract

In this work, super conducting Fault Current Limiter is proposed to protect the energy  storage system in a micro grid. Distributed Generation (DG) in the form of Renewable Power Generation systems is currently preferred for clean power generation. However there unpredictable nature of generation an energy storage system is integrated to the grid. Energy storage needs to be used to ensure that the load is met at all times. Energy storage systems (ESSs) are  enabling technologies for well-established and new applications such as power peak shaving, stability purpose, integration of renewable energies. The main objective of this project is to introduce a superconducting fault current limiter to keep the  energy storage system from disconnecting from the  grid when ground faults occur. The possible advantages of Superconducting Fault Current Limiter (SFCL) as a means to limit the adverse effect of DG on distribution system protection and their effectiveness will be demonstrated. The SFCL has been noticed as the best solution to limit fault current effectively. However, the application of the SFCL in the power system affects the protective coordination of the existing protective devices and can deviate their operation time from the original one. The simulation results are obtained using MATLAB/SIMULINKsoftware.