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Ensuring Sustainable Grid Stability through Effective EV Charging Management: A Time and Energy-Based Approach

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  • Saeed Alyami

    (Department of Electrical Engineering, Majmaah University, Al Majmaah 11592, Saudi Arabia)

Abstract

The rise of electric vehicles (EVs) has significantly transformed transportation, offering environmental advantages by curbing greenhouse gas emissions and fossil fuel dependency. However, their increasing adoption poses challenges for power systems, especially distribution systems, due to the direct connection of EVs with them. It requires robust infrastructure development, smart grid integration, and effective charging solutions to mitigate issues like overloading and peak demand to ensure grid stability, reliability, and sustainability. To prevent local equipment overloading during peak load intervals, the management of EV charging demand is carried out in this study, considering both the time to deadline and the energy demand of EVs. Initially, EVs are prioritized based on these two factors (time and energy)—those with shorter deadlines and lower energy demands receive higher rankings. This prioritization aims to maximize the number of EVs with their energy demands met. Subsequently, energy allocation to EVs is determined by their rankings while adhering to the transformer’s capacity limits. The process begins with the highest-ranked EV and continues until the transformer nears its limit. To this end, an index is proposed to evaluate the performance of the proposed method in terms of unserved EVs during various peak load intervals. Comparative analysis against the earliest deadline first approach demonstrates the superior ability of the proposed method to fulfill the energy demand of a larger number of EVs. By ensuring sustainable energy management, the proposed method supports the widespread adoption of EVs and the transition to a cleaner, more sustainable transportation system. Comparative analysis shows that the proposed method fulfills the energy needs of up to 33% more EVs compared to the earliest deadline method, highlighting its superior performance in managing network loads.

Suggested Citation

  • Saeed Alyami, 2024. "Ensuring Sustainable Grid Stability through Effective EV Charging Management: A Time and Energy-Based Approach," Sustainability, MDPI, vol. 16(14), pages 1-15, July.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:14:p:6149-:d:1437983
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    References listed on IDEAS

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