Elazim Sahar M Abd, Elkholy M H, Elgarhy A, Senjyu Tomonobu, Gamil Mahmoud M, Song Dongran, Ali Ehab S, Ludin Gul Ahmad, Irshad Ahmad Shah, Lotfy Mohammed Elsayed
Department of Computer Science, College of Engineering and Computer Science, Jazan University, Jizan, 45142, Saudi Arabia.
Electrical Power and Machines, Faculty of Engineering, Zagazig University, P.O. 44519, Zagazig, Egypt.
Sci Rep. 2025 Aug 1;15(1):28077. doi: 10.1038/s41598-025-14143-4.
Growing integration of renewable energy sources (RESs) into power grids has several advantages, including reduced greenhouse gas emissions and improved energy sustainability. Despite the related benefits, RES integration also poses actual challenges, such as power quality, voltage fluctuation, and reliability concerns. This study conducts a comprehensive performance evaluation of a grid-integrated microgrid consisting of an electric vehicle (EV) charging station, wherein the Volkswagen ID4 Crozz has been adopted as the standard EV model. The microgrid will consist of solar panels, a wind energy conversion system (WECS), and a battery energy storage system (BESS), which will be used for the supply of electricity economically with a reliable power supply. ETAP simulates various operating conditions to analyze their impact on voltage stability and power quality. This study investigates the impact of EV integration on power quality and applies advanced load management strategies, such as partial loading, selective disconnection, and coordinated renewable integration. A scenario-based optimization approach is used to minimize harmonic distortion and improve voltage stability. Among the configurations that were being compared, the 60% load configuration was superior, where the 5th harmonic distortion was 0.42% and the 11th was 0.55%, performing superior to full-load and other disconnection configurations of chargers. The configuration also had superior and stable voltage levels, which bear witness to its effectiveness in enhancing power quality as well as grid stability.
可再生能源（RES）越来越多地融入电网有诸多优势，包括减少温室气体排放和提高能源可持续性。尽管有这些相关益处，但可再生能源的整合也带来了实际挑战，如电能质量、电压波动和可靠性问题。本研究对一个由电动汽车（EV）充电站组成的并网微电网进行了全面的性能评估，其中采用大众ID4 Crozz作为标准电动汽车型号。该微电网将由太阳能板、风能转换系统（WECS）和电池储能系统（BESS）组成，这些将用于以可靠的电力供应经济地供电。ETAP模拟各种运行条件以分析它们对电压稳定性和电能质量的影响。本研究调查了电动汽车整合对电能质量的影响，并应用了先进的负荷管理策略，如部分负荷、选择性断开和协调可再生能源整合。采用基于场景的优化方法来最小化谐波失真并提高电压稳定性。在所比较的配置中，60%负荷配置表现更优，其中第5次谐波失真为0.42%，第11次为0.55%，优于充电器的满负荷和其他断开配置。该配置还具有更优且稳定的电压水平，这证明了其在提高电能质量以及电网稳定性方面的有效性。
