In a traction power supply system, due to the fact that impact and volatility of traction loads are large, the peak-valley difference is large, the regenerative braking process is frequent, the utilization rate is low, the planning and dispatching coupling degree is high, and capacity configuration of an energy storage system is difficult to plan. Meanwhile, the excessive charging and discharging of the battery can cause the loss of the service life of the battery and influence the economic efficiency of the traction power supply system. In order to solve the problem, the invention provides a multi-application strategy considering the hybrid energy storage life. Firstly, the characteristics of hybrid energy storage during traction load peak clipping and regenerative braking energy recovery are analyzed. Then, parameters are introduced to classify the charging state intervals, and an energy management principle is formulated; and finally, a double-layer optimization model with multiple application requirements is established to solve the problem of high coupling of planning and scheduling of hybrid energy storage. The provided control strategy can effectively solve the problems of peak clipping shortage and insufficient regenerative braking energy recovery, and meanwhile can ensure charge and discharge balance of the energy storage system. Through simulation verification, compared with a conventional strategy method, the strategy provided by the invention has the advantages that the energy consumption and the operation cost are reduced, so that the railway energy storage configuration cost is reduced. Through example analysis, it is verified that the method improves the traction power supply system planning-operation economy and the service life of the battery.

    在牵引供电系统中,由于牵引负荷的冲击性和波动性大,存在峰谷差大,再生制动过程频繁且利用率低,规划与调度耦合度高,储能系统的容量配置难以规划。同时,电池的过度充放电会造成电池寿命的损耗,也影响着牵引供电系统经济效率。为了解决上述问题,本发明提出了一种考虑混合储能寿命的多应用策略。首先,分析了混合储能在涉及牵引负荷削峰和再生制动能量回收时的特性。然后,引入参数来对充电状态间隔进行分类,并制定能量管理原则。最后,建立了多应用需求的双层优化模型来解决混合储能的规划和调度的高度耦合问题。所提控制策略能够有效解决削峰欠缺和再生制动能量回收不足的问题,同时能够保证储能系统充放电平衡。经仿真验证,所提策略相比常规策略的方法,降低能源消耗和运营成本,从而降低铁路储能配置成本。通过算例分析验证了该方法对牵引供电系统规划‑运行经济性、电池寿命的提升。


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    Title :

    Traction power supply system multi-application double-layer optimization configuration method considering battery life


    Additional title:

    一种考虑电池寿命的牵引供电系统多应用双层优化配置方法


    Contributors:
    LUO PEI (author) / XIAO ZHIWEI (author)

    Publication date :

    2024-08-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES





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