Currently, in multitrain DC subway system, abnormal increase of rail potential (RP) and stray current (SC) has seriously threatened the safe operation of the system. Over voltage protection device (OVPD) is generally chosen to control the RP, but its action process may increase the amplitude of SC seriously. Here, the grounding resistance of OVPD is optimized by a proposed multi‐objective decomposition algorithm based on differential evolution (MOEA/D‐DE) to suppress the rise of RP and SC synergistically. Firstly, the simulation model of the DC subway system with multitrain is built, the power flow calculation is conducted, and the dynamic RP and leakage current (LC) at the location of traction substation are obtained. Secondly, the double objective optimization model of maximum RP and LC is established and solved by MOEA/D‐DE. Finally, the effectiveness of the proposed method is verified based on the data of Guangzhou Metro Line 2. Results show that the SC of the system can be controlled effectively with OVPD grounding mode after optimization, and integrated control of RP and SC can be accomplished.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Optimization of grounding resistance in multitrain DC subway system based on MOEA/D‐DE


    Beteiligte:
    Liu, Na (Autor:in) / Du, Guifu (Autor:in) / He, Fei (Autor:in) / Li, Qiaoyue (Autor:in) / Xu, Fengchuan (Autor:in) / Huang, Weiguo (Autor:in) / Jiang, Xingxing (Autor:in) / Zhu, Zhongkui (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2023-08-01


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Optimization of grounding resistance in multitrain DC subway system based on MOEA/D‐DE

    Na Liu / Guifu Du / Fei He et al. | DOAJ | 2023

    Freier Zugriff


    STUDIES ON THE APPLICATION OF MOEA/D TO AERODYNAMIC OPTIMIZATION DESIGN

    Zhu, X. Q. / Gao, Z. H. / Chen, Z. W. | British Library Conference Proceedings | 2018


    MOEA/D based UAV swarm deployment for wireless coverage

    Lu, Shanshan / Zhang, Xiao / Zhou, Yu et al. | IEEE | 2021