通过饱和限制实现直流微电网中分布式电池储能系统的半对等安全协调控制

IF 8.6 1区 工程技术 Q1 ENERGY & FUELS IEEE Transactions on Sustainable Energy Pub Date : 2024-08-08 DOI:10.1109/TSTE.2024.3440331
Ting Yang;Jilin Lang;Hao Li
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引用次数: 0

摘要

本文提出了一种半对等协调控制策略,以确保母线电压稳定并有效约束功率轨迹,从而减轻基于分布式电池储能系统(DBESS)的直流微电网中因单元功率过大和通信故障而引起的安全问题。首先,主控制器采用饱和前馈设计,以维持总线电压稳定,并通过下垂控制解决功率分配的过度部分。饱和结果实现了参考状态的灵活切换,允许储能装置(ESU)在电压跟踪和功率跟踪模式之间自主转换。其次,引入了分布式共识和饱和分配的双动态功率分配策略。分布式共识功率分配旨在实现同步比例充放电,以实现 SOC 平衡。针对通信故障的离线 ESU,设计了到达操作点的饱和功率分配,以避免离线 ESU 的过度使用。针对离线 ESU 可能出现的通信故障,设计了基于当前运行点的饱和功率分配策略,以降低离线 ESU 过度使用的风险。最后,模拟和实验结果验证了所提方法的有效性。
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Semi-Peer-to-Peer Safety Coordination Control for Distributed Battery Energy Storage System in DC Microgrids via Saturated Limitation
This paper presents a semi-peer coordination control strategy to ensure the bus voltage stability and effectively constrain the power trajectory, thereby mitigating safety concerns arising from excessive unit power and communication failures in distributed battery energy storage systems (DBESS) based DC microgrids. Firstly, the primary controller is employed a saturated feedforward design to maintain bus voltage stability and address the excessive part of power allocation with droop control. The saturation results enable flexible switching of the reference state, allowing energy storage units (ESUs) to autonomously transition between voltage tracking and power tracking modes. Secondly, the dual-dynamic power allocation strategy is introduced with distributed consensus and saturation allocation.The power allocation with distributed consensus aims to achieve synchronous proportional charging and discharging for SOC balancing. For the offline ESUs of communication failures, saturation power allocation is designed with arrived operation point to avoid the over-utilization of offline ESUs. To address potential communication failures in offline ESUs, the saturation power allocation strategy based on the current operational point is devised to mitigate the risk of over-utilization of offline ESUs. Finally, simulations and experimental results verify the effectiveness of the proposed method.
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来源期刊
IEEE Transactions on Sustainable Energy
IEEE Transactions on Sustainable Energy ENERGY & FUELS-ENGINEERING, ELECTRICAL & ELECTRONIC
CiteScore
21.40
自引率
5.70%
发文量
215
审稿时长
5 months
期刊介绍: The IEEE Transactions on Sustainable Energy serves as a pivotal platform for sharing groundbreaking research findings on sustainable energy systems, with a focus on their seamless integration into power transmission and/or distribution grids. The journal showcases original research spanning the design, implementation, grid-integration, and control of sustainable energy technologies and systems. Additionally, the Transactions warmly welcomes manuscripts addressing the design, implementation, and evaluation of power systems influenced by sustainable energy systems and devices.
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Introducing IEEE Collabratec Table of Contents IEEE Transactions on Sustainable Energy Information for Authors 2024 Index IEEE Transactions on Sustainable Energy Vol. 15 Share Your Preprint Research with the World!
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