Stability improvement in microgrids using hybridization of RSFCL along with fuzzy based SAPF

Present-day, microgrids play a major role in human life as usage of energy increases day by day. In this work, the number of Distributed Generations (DGs) are three such as fuel cell, wind energy, and solar energy. These three DGs are interconnected with the utility grid. Using phase-locked loop circuits synchronization process is done in between DGs and main grid. In this proposed work LLL-G fault is formed closer to the wind DG, then abnormal currents are increased, and voltage levels are reduced hence, the system does not have stability. Till now, circuit breakers have been used for safety but it suffers from drawbacks. To avoid such type of drawbacks, Resistive type Superconducting Fault Current Limiter (RSFCL) is connected in the microgrid. Under healthy conditions, RSFCL performs as a superconductor, and in abnormal circumstances, it turns into a high impedance path then fault currents are limited and continuity of supply is possible. RSFCL have some drawbacks such as it does not compensate for the reactive power hence voltage magnitudes are not recompensed due to that reason, fuzzy controller-based Series Active Power Filter (SAPF) is hybridized with RSFCL.