Real-time energy management simulation for enhanced integration of renewable energy resources in DC microgrids

IF 2.6 4区 工程技术 Q3 ENERGY & FUELS Frontiers in Energy Research Pub Date : 2024-09-02 DOI:10.3389/fenrg.2024.1458115
Hassan Hadi H. Awaji, Abdullah Ali Alhussainy, Abdulraheem H. Alobaidi, Sultan Alghamdi, Sami Alghamdi, Mohammed Alruwaili
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Abstract

The presented work addresses the growing need for efficient and reliable DC microgrids integrating renewable energy sources. However, for the sake of practicality, implementing complex control strategies can increase system complexity. Thus, efficient methodologies are required to provide efficient energy management of microgrids while increasing the integration of renewable energy sources. The primary contribution of this work is to investigate the issues related to operating a DC microgrid with conventional control designed to power DC motors using readily available, non-advanced control strategies with the objective of achieving stable and reliable grid performance without resorting to complex control schemes. The proposed microgrid integrates a combination of uncontrollable renewable distributed generators (DGs) alongside controllable DGs and energy storage systems, including batteries and supercapacitors, connected via DC links. The Incremental Conductance (InCond) algorithm is employed for maximum power point tracking to maximize power output from the PV system. The energy management strategy prioritizes the solar system as the primary source, with the battery and supercapacitor acting as backup power sources to ensure overall system reliability and sustainability. The effectiveness of the microgrid under various operating conditions is evaluated through extensive simulations conducted using MATLAB. These simulations explore different power generation scenarios, including normal operation with varying load levels and operation under Standard Test Conditions (STC). Moreover, fault analysis of the DC microgrid is performed to examine system reliability. The system performance is evaluated using real-time simulation software (OPAL-RT) to validate the effectiveness of the approach under real-time conditions. This comprehensive approach demonstrates the efficacy of operating a DC microgrid with conventional controllers, ensuring grid stability and reliability across various operating conditions and fault scenarios while prioritizing the use of renewable energy sources. The results illustrated that system efficiency increases with load, but fault tolerance measures, can introduce trade-offs between reliability and peak efficiency.
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加强直流微电网中可再生能源资源整合的实时能源管理模拟
所介绍的工作满足了对集成可再生能源的高效、可靠直流微电网日益增长的需求。然而,出于实用性考虑,实施复杂的控制策略会增加系统的复杂性。因此,需要高效的方法来提供微电网的高效能源管理,同时提高可再生能源的集成度。这项工作的主要贡献在于研究了与直流微电网运行相关的问题,该微电网采用传统控制设计,使用现成的非高级控制策略为直流电机供电,目的是在不采用复杂控制方案的情况下实现稳定可靠的电网性能。拟议的微电网将不可控的可再生分布式发电机(DG)与可控的分布式发电机和储能系统(包括电池和超级电容器)结合在一起,并通过直流链路连接。增量电导(InCond)算法用于最大功率点跟踪,以最大限度地提高光伏系统的功率输出。能源管理策略优先将太阳能系统作为主电源,将蓄电池和超级电容器作为备用电源,以确保整个系统的可靠性和可持续性。通过使用 MATLAB 进行大量模拟,评估了微电网在各种运行条件下的有效性。这些模拟探索了不同的发电场景,包括不同负载水平下的正常运行和标准测试条件(STC)下的运行。此外,还对直流微电网进行了故障分析,以检查系统可靠性。使用实时仿真软件(OPAL-RT)对系统性能进行评估,以验证该方法在实时条件下的有效性。这种综合方法证明了使用传统控制器运行直流微电网的有效性,确保了电网在各种运行条件和故障情况下的稳定性和可靠性,同时优先使用了可再生能源。结果表明,系统效率会随着负荷的增加而提高,但容错措施会在可靠性和峰值效率之间带来权衡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Frontiers in Energy Research
Frontiers in Energy Research Economics, Econometrics and Finance-Economics and Econometrics
CiteScore
3.90
自引率
11.80%
发文量
1727
审稿时长
12 weeks
期刊介绍: Frontiers in Energy Research makes use of the unique Frontiers platform for open-access publishing and research networking for scientists, which provides an equal opportunity to seek, share and create knowledge. The mission of Frontiers is to place publishing back in the hands of working scientists and to promote an interactive, fair, and efficient review process. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria
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