Parallel-Execute-Based Real-time Energy Management Strategy for FTPSS integrated PV and ESS

IF 11 1区工程技术 Q1 ENERGY & FUELS Applied Energy Pub Date : 2025-05-01 Epub Date: 2025-02-18 DOI:10.1016/j.apenergy.2025.125538

Junhao Li , Qi Guo , Xin Wang , Chunming Tu , Fan Xiao , Yuchao Hou , Xia Shen

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Abstract

Constructing a flexible traction power supply system (FTPSS) integrating railway power conditioner (RPC), energy storage system (ESS), and photovoltaic (PV) is essential to realize low-carbon and economical railway transportation. However, the existing rule-based energy management strategies (EMS) only focus on RPC and ESS, whose applicability and economy are limited for FTPSS accessed PV. In addition, the operational optimization model of FTPSS is complex and data-intensive, resulting in the existing optimization EMS being mostly poor at reliability and timeliness. To this end, a parallel-execute-based real-time EMS for FTPSS integrated ESS and PV is proposed. First, the real-time collaborative management of PV, ESS, and RPC is realized with the improved rule-based EMS. Then, considering the operation cost and the three-phase voltage unbalance rate (TVUR), the multi-objective optimization model of FTPSS is built. Further, a coordination mechanism between the rule-based and optimization EMS is proposed. By executing the rule-based and optimization EMS in parallel and switching their reference commands within the real-time management time threshold, the EMS's reliability, timeliness, and economy performance can be improved simultaneously. Finally, the proposed EMS is verified based on the measured data from a traction station.

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基于并行执行的FTPSS集成光伏与ESS实时能源管理策略

构建集铁路调压器（RPC）、储能系统（ESS）和光伏发电（PV）于一体的柔性牵引供电系统（FTPSS）是实现铁路低碳经济运输的必要条件。然而，现有的基于规则的能源管理策略（EMS）只关注RPC和ESS，其适用性和经济性在FTPSS接入的光伏电站中受到限制。此外，FTPSS的运行优化模型复杂，数据量大，导致现有的优化EMS大多可靠性和时效性较差。为此，提出了一种基于并行执行的集成ESS和PV的FTPSS实时管理系统。首先，利用改进的基于规则的EMS实现PV、ESS和RPC的实时协同管理。然后，考虑运行成本和三相电压不平衡率，建立了FTPSS的多目标优化模型。在此基础上，提出了基于规则的环境管理系统与优化环境管理系统之间的协调机制。通过在实时管理时间阈值内并行执行基于规则的EMS和优化的EMS，并切换它们的参考命令，可以同时提高EMS的可靠性、时效性和经济性。最后，利用某牵引站的实测数据对所提出的电磁干扰系统进行了验证。

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来源期刊

Applied Energy 工程技术-工程：化工

CiteScore

21.20

自引率

10.70%

发文量

1830

审稿时长

41 days

期刊介绍： Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.