Title: Voltage stability analysis of smart distribution grids with PV systems using fuzzy logic controller with firefly optimisation algorithm

Authors: Karthikeyan Subramanian; Ashok Kumar Loganathan

Addresses: Department of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore 641004, Tamil Nadu, India ' Department of Electrical and Electronics Engineering, PSG College of Technology, Coimbatore 641004, Tamil Nadu, India

Abstract: Renewable sources play a significant role in the distributed power system that can overcome the energy demand and crisis. The paper proposes solar photo voltaic (PV) system in grid utility applications. The proposed work consists of three major divisions to perform better power quality and voltage sag in the grid-connected system. The initial stage involves developing a PV system with a static synchronous compensator (STATCOM), which increases the dynamic reactive power compensation. The second stage, with improved design of the STATCOM unit, can increase the quality and stability of the PV system. The third stage consists of developing fuzzy gain scheduling with fire-fly optimising algorithm (FFOA) that combines with STATCOM to increase the quality of the power system. The voltage stability of the proposed system is achieved by reactive power injection with compensation of voltage oscillation. Voltage swells and Sag has been minimised under balance load condition in STATCOM using FGS controller with FFOA.

Keywords: fuzzy gain scheduling; reactive power compensation; solar photovoltaic; PV; system; static synchronous compensator; STATCOM; voltage stability; smart distribution systems.

DOI: 10.1504/IJESMS.2023.131797

International Journal of Engineering Systems Modelling and Simulation, 2023 Vol.14 No.3, pp.125 - 140

Received: 24 Jul 2021
Accepted: 17 Nov 2021
Published online: 03 Jul 2023 *

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