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Multi-Objective Optimal Integration of Distributed Generators into Distribution Networks Incorporated with Plug-In Electric Vehicles Using Walrus Optimization Algorithm

Author

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  • Mohammed Goda Eisa

    (Electrical Power and Machines Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt)

  • Mohammed A. Farahat

    (Electrical Power and Machines Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt)

  • Wael Abdelfattah

    (Electrical Power and Machines Engineering Department, The Higher Institute of Engineering, El-Shorouk Academy, Cairo 11837, Egypt)

  • Mohammed Elsayed Lotfy

    (Electrical Power and Machines Engineering Department, Faculty of Engineering, Zagazig University, Zagazig 44519, Egypt
    Department of Electrical and Electronics Engineering, University of the Ryukyus, Nishihara 903-0213, Okinawa, Japan)

Abstract

The increasing adoption of plug-in electric vehicles (PEVs) leads to negative impacts on distribution network efficiency due to the extra load added to the system. To overcome this problem, this manuscript aims to optimally integrate distributed generators (DGs) in radial distribution networks (RDNs), while including uncoordinated charging of PEVs added to the basic daily load curve with different load models. The main objectives are minimizing the network’s daily energy losses, improving the daily voltage profile, and enhancing voltage stability considering various constraints like power balance, buses’ voltages, and line flow. These objectives are combined using weighting factors to formulate a weighted sum multi-objective function (MOF). A very recent metaheuristic approach, namely the Walrus optimization algorithm (WO), is addressed to identify the DGs’ best locations and sizes that achieve the lowest value of MOF, without violating different constraints. The proposed optimization model along with a repetitive backward/forward load flow (BFLF) method are simulated using MATLAB 2016a software. The WO-based optimization model is applied to IEEE 33-bus, 69-bus, and a real system in El-Shourok City-district number 8 (ShC-D8), Egypt. The simulation results show that the proposed optimization method significantly enhanced the performance of RDNs incorporated with PEVs in all aspects. Moreover, the proposed WO approach proved its superiority and efficiency in getting high-quality solutions for DGs’ locations and ratings, compared to other programmed algorithms.

Suggested Citation

  • Mohammed Goda Eisa & Mohammed A. Farahat & Wael Abdelfattah & Mohammed Elsayed Lotfy, 2024. "Multi-Objective Optimal Integration of Distributed Generators into Distribution Networks Incorporated with Plug-In Electric Vehicles Using Walrus Optimization Algorithm," Sustainability, MDPI, vol. 16(22), pages 1-37, November.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:22:p:9948-:d:1521187
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    References listed on IDEAS

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