电工技术学报  2024, Vol. 39 Issue (11): 3339-3352    DOI: 10.19595/j.cnki.1000-6753.tces.230320
电力系统与综合能源 |
基于“规则 + 优化”的电气化铁路站点实时能量管控策略
李俊豪, 涂春鸣, 王鑫, 郭祺, 肖凡
国家电能变换与控制工程技术研究中心(湖南大学) 长沙 410082
Real-Time Energy Management Strategy for Electrified Railroad Stations Based on “Rules + Optimization”
Li Junhao, Tu Chunming, Wang Xin, Guo Qi, Xiao Fan
National Engineering Research Center for Electrical Energy Conversion and Control Hunan University Changsha 410082 China
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摘要 构建“网-源-储-车”协同供电架构以实现电气化铁路的实时、可靠、高效能量管控,对推进“双碳”目标的实现具有重要意义。然而,既有规则管控策略主要针对“网-储-车”架构、管控,效果有限;优化管控策略往往关注于经济性等单一指标,可靠性较低。为此,该文首先补充了适用于“网-源-储-车”架构的规则管控策略,并构建了计及经济性与电压不平衡度的多目标管控优化模型;然后,提出一种基于“规则+优化”的电气化铁路站点实时能量管控策略,采用优化管控为主、规则管控为辅的形式,以实时管控时间阈值为导向,有序切换输出指令,在保证站点能量管控的可靠性与实时性的同时,实现整体运行效果的优化提升;最后,基于刘家沟牵引变电所实测数据对所提策略进行验证,结果表明,该文所提策略在实现新能源就地消纳与再生制动能量高效利用的同时,可改善牵引网电压水平与公共电网电能质量。
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李俊豪
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关键词 电气化铁路网-源-储-车实时能量管控规则管控优化管控    
Abstract:While promoting national economic growth, the rapid development of electrified railroads has increased the pressure of energy consumption, energy saving and emission reduction of the system. The construction of "network-source-storage-train" cooperative power supply system is conducive to the local consumption of new energy and the recycling of regenerative braking energy, which is of great significance to achieve the goal of "double carbon". However, the existing rules management strategy mainly focuses on the "network-storage-train" architecture and has limited management effect; the optimized management strategy often focuses on a single indicator such as economy and has low reliability. Therefore, this paper proposes a real-time energy management strategy based on "rules + optimization" for electrified railroad stations, which can improve the traction network voltage level and public grid power quality while achieving efficient utilization of new energy and regenerative braking energy.
First of all, the "network-source-storage-train" cooperative power supply mechanism is determined with the low-carbon economic operation of the system as the guide, and the energy management instructions in each working mode are determined through logical analysis and judgment to improve the energy rule management strategy under the "network-source-storage-train" cooperative power supply architecture. Then, taking into account the traction transformer, railway power conditioner power transmission losses and new energy, train regenerative braking energy disposal costs, the system operation cost function is improved to enhance the system global optimization capability. Further, a multi-objective site energy management optimization model is constructed with the objectives of minimizing the site operation cost and minimizing the three-phase voltage imbalance on the high-voltage side of the traction transformer, and the model is simplified by using a logical front, and the site energy optimization management strategy is formulated based on the solution results. Finally, the cooperation mechanism of rule management and optimization management is designed, starting with the parallelism of the two procedures and ending with the real-time management time threshold, so as to realize the orderly switching of management instructions and the complementary advantages of management strategies.
Through the simulation verification of the measured data, the following conclusions can be drawn: (1) The rule management can achieve ms-level output, which makes up for the defect that the optimization management cannot reliably output instructions within the real-time management requirements. (2) The multi-objective optimal management strategy designed in this paper can consume 0.77 MW more clean energy in a single day, reduce the operating cost by 0.55% more and the voltage imbalance does not exceed the national standard, which fills the shortage of rule management in the multi-objective optimal operation of the system. (3) Compared with the traditional traction power supply system without energy management, the single-day operating cost of the system under the energy management strategy based on "rules + optimization" in this paper can be reduced by 42.51%, the voltage fluctuation range of the low-voltage side of the traction transformer can be reduced by 93.44%, and the highest value of the three-phase voltage unbalance on the high-voltage side is only 1.81%. All test moments can meet the national standard requirements. (4) Under the real-time energy management strategy based on "rules + optimization", the estimated payback time of the "network-source-storage-train" cooperative power supply system is 2.1 years, and the final benefit is 2.55×104 million RMB, which provides strong support for the implementation of the actual project.
Key wordsElectrified railroad    network-source-storage-train    real-time energy management    rules management    optimized management   
收稿日期: 2023-03-23     
PACS: TM922.3  
基金资助:国家重点研发计划资助项目(2021YFB2601504)
通讯作者: 王 鑫 男,1997年生,博士研究生,研究方向为分布式能源与微电网、电气化铁路贯通牵引供电系统。E-mail:wx815307656@foxmail.com   
作者简介: 李俊豪 男,1998年生,硕士研究生,研究方向为微能源网优化管控。E-mail:lih17wo@hnu.edu.cn
引用本文:   
李俊豪, 涂春鸣, 王鑫, 郭祺, 肖凡. 基于“规则 + 优化”的电气化铁路站点实时能量管控策略[J]. 电工技术学报, 2024, 39(11): 3339-3352. Li Junhao, Tu Chunming, Wang Xin, Guo Qi, Xiao Fan. Real-Time Energy Management Strategy for Electrified Railroad Stations Based on “Rules + Optimization”. Transactions of China Electrotechnical Society, 2024, 39(11): 3339-3352.
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