Investigating Configuration-Induced Changes in Hybrid Microgrid (HµG) Parameters for Grid-Connected and Standalone Modes

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Transactions on Electrical Energy Systems Pub Date : 2025-07-21 DOI:10.1155/etep/1844642

Abraham O. Amole, Owomano N. Imarhiagbe, Stephen Oladipo, Yanxia Sun

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Abstract

The integration of renewable energy sources into hybrid microgrids (HµGs) holds the potential to improve grid voltage profiles, but without proper optimization, it can also lead to performance degradation. This study offers an explorative investigation into the dynamic behavior of HµGs under various configurations, operating in both grid-connected and standalone modes. Through technical analyses, an energy system design is presented for comparing performance across different scenarios. In contrast to previous research, HµGs incorporating solar photovoltaic (PV) systems, wind turbine generation (WTG), diesel generators (DG), and battery energy storage systems (BESS) are modeled. Two operational cases—grid connected (Case 1) and standalone (Case 2)—are simulated, each evaluated through three scenarios using MATLAB/Simulink. Key parameters such as HµG voltage, frequency, power contributions, and battery state of charge (SoC) are analyzed, revealing significant challenges and insights into system behavior. The study shows that changes in system configuration impact HµG voltage and frequency, with maximum deviations reaching 54 Hz, 17 kV, and 5.8 kV. Frequency instability is observed in scenarios involving WTG integration, while sensitivity analysis highlights the critical role of load variations on frequency stability. This research provides actionable benchmarks for network planners and operators to ensure efficient integration of renewable energy into power grids.

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研究并网和独立模式下混合微电网（HµG）参数配置引起的变化

将可再生能源整合到混合微电网（HµGs）中有可能改善电网电压分布，但如果没有适当的优化，也可能导致性能下降。本研究对Hµg在不同配置下的动态行为进行了探索性研究，包括并网和独立模式。通过技术分析，提出了一种能源系统设计方案，以比较不同场景下的性能。与之前的研究相比，我们对太阳能光伏（PV）系统、风力发电（WTG）、柴油发电机（DG）和电池储能系统（BESS）的HµGs进行了建模。模拟了两种操作情况——网格连接（案例1）和独立（案例2），每种情况都通过使用MATLAB/Simulink的三种情况进行了评估。分析了HµG电压、频率、功率贡献和电池充电状态（SoC）等关键参数，揭示了对系统行为的重大挑战和见解。研究表明，系统配置的变化对HµG电压和频率的影响最大，偏差分别为54 Hz、17 kV和5.8 kV。在涉及WTG集成的情况下观察到频率不稳定性，而灵敏度分析强调了负载变化对频率稳定性的关键作用。该研究为电网规划者和运营商提供了可操作的基准，以确保可再生能源有效地整合到电网中。

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来源期刊

International Transactions on Electrical Energy Systems ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

6.70

自引率

8.70%

发文量

342

期刊介绍： International Transactions on Electrical Energy Systems publishes original research results on key advances in the generation, transmission, and distribution of electrical energy systems. Of particular interest are submissions concerning the modeling, analysis, optimization and control of advanced electric power systems. Manuscripts on topics of economics, finance, policies, insulation materials, low-voltage power electronics, plasmas, and magnetics will generally not be considered for review.