The invention provides a rail transit power supply system. The rail transit power supply system comprises an external power supply, a power supply circuit and a plurality of load power supply circuitsfor supplying power to a traction power supply load and a power lighting power supply load. The external power supply is connected with the input end of the power supply line, the input end of the load power supply line is connected with the output end of the power supply line, and each load power supply line comprises a power transformer, a traction transformer and an overhead line system. The primary side of the power transformer and the primary side of the traction transformer are connected with the output end of the power supply line, the secondary side of the power transformer is connected with the power lighting power supply load, the secondary side of the traction transformer is connected with the overhead line system, and the overhead line system is used for supplying power to thetraction power supply load. The overhead line system is provided with a plurality of split-phase areas, and each split-phase area is connected with different phase-to-phase voltages of the secondaryside of the traction transformer, so that the problems of low utilization rate of a looped network cable and three-phase imbalance of a traction power supply system are solved.

    本发明提供了一种轨道交通供电系统,包括:外部电源、供电线路、若干个用于为牵引供电负载和动力照明供电负载供电的负载供电线路;外部电源与供电线路的输入端连接,负载供电线路的输入端与供电线路的输出端连接;每一负载供电线路包括动力变压器、牵引变压器和接触网;动力变压器的一次侧、牵引变压器的一次侧均与供电线路的输出端连接,动力变压器的二次侧与动力照明供电负载连接,牵引变压器的二次侧与接触网连接,接触网用于为牵引供电负载供电;接触网设置有若干分相区,每一分相区连接牵引变压器的二次侧的不同相间电压;解决环网电缆利用率低、牵引供电系统存在三相不平衡的问题。


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    Title :

    Rail transit power supply system


    Additional title:

    一种轨道交通供电系统


    Contributors:
    FENG CHAO (author) / SHI HAI'OU (author) / HOU FENG (author) / HE ZHIXIN (author) / LI KUNPENG (author) / ZHAO YUNYUN (author) / WANG HONGJIE (author) / GAO JIE (author) / LU XIAOLI (author) / LIN XIAOHONG (author)

    Publication date :

    2020-12-04


    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 / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60M Speiseleitungen oder Vorrichtungen am Gleis für elektrisch angetriebene Fahrzeuge , POWER SUPPLY LINES, OR DEVICES ALONG RAILS, FOR ELECTRICALLY-PROPELLED VEHICLES



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