Title: Power quality improvement of grid connected renewable energy system using D-STATCOM

Authors: Saeed Alhelali; Sayed Ali Abbas Al-Mosawi; Fadhel Abbas Albasri

Addresses: Electrical and Electronics Engineering Department, College of Engineering in University of Bahrain, Bahrain ' Electrical and Electronics Engineering Department, College of Engineering in University of Bahrain, Bahrain ' Electrical and Electronics Engineering Department, College of Engineering in University of Bahrain, Bahrain

Abstract: This article aims to improve the power quality of a distribution network integrated with renewable energy sources by using a Distribution Static Synchronous Compensator (D-STATCOM). Renewable energy sources can distort the power quality, leading to issues concerning the stability of the grid. Moreover, the improvement of the STATCOM devices in this article will focus on designing a controller that will improve the network power quality by maintaining the voltage within the prescribed range. Various models of a network embedded with STATCOM devices will be designed and simulated simultaneously to compare and show the performance of each model. The tests will cover the reaction of the STATCOM device during multiple disturbance scenarios. The designed models will incorporate various controllers to mitigate different types of network disturbances. The results will show which model has a faster response time, better transient stability, and unbalanced fault detection and mitigation.

Keywords: fuzzy controller; negative sequence controller; power quality; proportional integral; PI controller; renewable energy sources; static synchronous compensator; STATCOM; unbalanced faults.

DOI: 10.1504/IJPELEC.2026.156023

International Journal of Power Electronics, 2026 Vol.22 No.5, pp.473 - 498

Received: 05 Jan 2025
Accepted: 26 Apr 2025
Published online: 01 Sep 2026 *

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