The invention discloses an electric vehicle retired battery pack equivalent model modeling method applied to an electric power system, and belongs to the field of battery energy storage in the electric power system. Firstly, an out-of-service battery monomer equivalent circuit model suitable for power grid operation is provided; secondly, the characteristics of each stage of the out-of-service battery discharge process and corresponding influence factors are analyzed; thirdly, an out-of-service battery monomer equivalent model is put forward; fourthly, for the out-of-service battery pack, theconsistency between the series branch batteries is calculated based on the information entropy, and an equivalent electromotive force model and an equivalent internal resistance model of the out-of-service battery pack are corrected; and finally, an electric vehicle out-of-service battery pack equivalent model considering the consistency is obtained. The equivalent model of the out-of-service battery pack is provided for solving the problem that the out-of-service battery pack of the electric vehicle is recycled and participates in power grid operation; the equivalent model is corrected on the basis of the consistency of the out-of-service batteries by considering the difference between the series branch single batteries of the out-of-service batteries, so that the feasibility and accuracy of the equivalent model applied to the power system are ensured, the surplus value of the equivalent model is fully exerted, and the economical efficiency of power distribution network operation isimproved.

    一种应用于电力系统的电动汽车退役电池组等效模型建模方法,属于电力系统中电池储能领域。首先,提出适用于电网运行的退役电池单体等效电路模型。其次,分析退役电池放电过程各阶段特点及相应的影响因素。再次,提出退役电池单体等效模型。再次,针对退役电池组,基于信息熵计算串联支路电池间的一致性,修正退役电池组等效电动势模型及等效内阻模型。最后,得到考虑一致性的电动汽车退役电池组等效模型。本发明针对电动汽车退役电池组再利用参与电网运行问题提出退役电池组的等效模型,计及退役电池的串联支路单体电池间的差异,基于退役电池间的一致性对等效模型进行修正,保证应用于电力系统的等效模型的可行性和准确性,充分发挥其剩余价值,提高配电网运行的经济性。


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    Titel :

    Electric vehicle retired battery pack equivalent model modeling method applied to electric power system


    Weitere Titelangaben:

    一种应用于电力系统的电动汽车退役电池组等效模型建模方法


    Beteiligte:
    HU SHUBO (Autor:in) / SUN HUI (Autor:in) / GAO ZHENGNAN (Autor:in) / LIU XINYU (Autor:in) / ZHANG LIANG (Autor:in) / SUN BAOSHUO (Autor:in) / YANG FAN (Autor:in) / ZHOU TONG (Autor:in) / FAN XUANXUAN (Autor:in) / WANG YUYING (Autor:in)

    Erscheinungsdatum :

    2020-10-30


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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