Enhancing Voltage and Power Stability in Distribution System with Photovoltaic from the Benefits of Battery Energy Storage

Narate Charlangsut and Nattachote Rugthaicharoencheep ()
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Narate Charlangsut: Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology, Phra Nakhon, Bangkok 10800, Thailand
Nattachote Rugthaicharoencheep: Department of Electrical Engineering, Faculty of Engineering, Rajamangala University of Technology, Phra Nakhon, Bangkok 10800, Thailand

Energies, 2025, vol. 18, issue 3, 1-16

Abstract: This paper presents a method of enhancing voltage and power stability in a distribution system with the photovoltaic benefits of battery energy storage. The objective is to use photovoltaic-distributed generation and a battery energy storage system in order to reduce power loss to a minimum and generate a voltage up to or above 0.95 p.u, which is the voltage standard in Thailand. This paper used MATLAB (Version R2024b-acdemic use) to conduct test experiments, and the system for the case studies is an IEEE 33-bus radial distribution system. There are five study cases in this paper. Case 1 is before the installation of the photovoltaic and battery energy storage system. Case 2 is the installation of the photovoltaic-distributed generator in four buses. Case 3 is the installation of the photovoltaic-distributed generator in only one bus. Case 4 is the installation of the photovoltaic distributed generator in two buses that have the most voltage drop. Case 5 is the installation of the photovoltaic-distributing generator in four buses and the battery energy storage system in two buses. The results show that Case 5 is the best because the voltage drop is never below 0.95 per unit or below the lowest power loss.

Keywords: distribution system; battery energy storage system; photovoltaic system; voltage drop (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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