PRc-PID with Grey Wolf Optimization based UPQC for Power Quality Enhancement in Standalone Microgrids

International Journal of Electrical and Electronics Engineering

© 2025 by SSRG - IJEEE Journal

Volume 12 Issue 11

Year of Publication : 2025

Authors : P.B. Guru Prasanna, Neela Ramanathan, T. Chandra Shekar

10.14445/23488379/IJEEE-V12I11P104

How to Cite?

P.B. Guru Prasanna, Neela Ramanathan, T. Chandra Shekar, "PRc-PID with Grey Wolf Optimization based UPQC for Power Quality Enhancement in Standalone Microgrids," SSRG International Journal of Electrical and Electronics Engineering, vol. 12,  no. 11, pp. 35-47, 2025. Crossref, https://doi.org/10.14445/23488379/IJEEE-V12I11P104

Abstract:

Microgrids that are self-sufficient and powered by renewable energy sources like solar and wind are necessary for the electrification of less-populated areas. When it comes to power quality, however, they are susceptible to problems because of the nonlinear load behaviors and the variable nature of the generation. A solution that is effective in addressing voltage and current disturbances is the Unified Power Quality Conditioner (UPQC), which is a combination of series and shunt APF. Precise resonance frequency and proportional-integral gain adjustment are critical to the PRc-PID controller's performance. Instability or poorer harmonic rejection performance could result from minor parameter variations. Grey Wolf Optimization (GWO), a metaheuristic method inspired by nature, is given in this paper to prevent these parameter variations. The purpose of this approach is to optimize the tuning of UPQC controllers in order to improve power quality in standalone microgrids. A MATLAB/Simulink model of a standalone microgrid is used to implement the GWO-based technique, and the performance of this new approach is compared to that of the TLBO version. The results demonstrate considerable improvements in Total Harmonic Distortion (THD), voltage Sag/Swell, and Current distortions, which validate the usefulness of GWO in adaptive UPQC management.

Keywords:

UPQC, Microgrid, PRc-PID controller, Grey wolf optimization, THD, MATLAB/Simulink.

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