Performance Evaluation of Redox Flow Battery Based Virtual Inertia and GWO Optimized Fuzzy PID Control for Frequency Stability Enhancement in Low Inertia Power Systems
Volume: 15 - Issue: 01 - Date: 01-01-2026
Approved ISSN: 2278-1412
Published Id: IJAECESTU485 | Page No.: 112-116
Author: Nitin Chouhan
Co- Author: Ashish Bhargava,,,
Abstract:-The increasing penetration of inverter-interfaced renewable energy sources has
significantly reduced the effective inertia of modern power systems, leading to severe frequency
stability challenges. Low-inertia operation results in large frequency deviations, high rate of
change of frequency (RoCoF), and increased risk of system instability following disturbances. This
paper presents a comprehensive performance evaluation of a Redox Flow Battery (RFB)–based
Virtual Inertia Control (VIC) strategy combined with a Grey Wolf Optimizer (GWO)–optimized
Fuzzy Self-Tuned PID controller for frequency stability enhancement in low-inertia power
systems. The proposed framework is evaluated on a two-area interconnected power system under
conventional, renewable-integrated low-inertia, and virtual-inertia-supported operating
conditions. Extensive simulation studies are carried out to analyze frequency deviation, RoCoF,
mechanical power response, overshoot, settling time, and ITAE indices. The results demonstrate
that the proposed RFB-based VIC with intelligent control significantly improves both transient
and steady-state frequency performance, providing a robust and scalable solution for renewabledominated low-inertia power grids
Key Words:- Low-Inertia Power System, Virtual Inertia Control, Redox Flow Battery, Frequency Stability, GWO-Optimized Fuzzy PID, Renewable Energy Integration;
Area:-Engineering
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