The invention discloses a 35kV/27.5 kV auxiliary traction power supply for an electrified railway and a control method. A traction substation feeds out a long-distance power supply line, and reliability and operation cost are high. The system comprises an incoming line and protection unit, a V/v wiring traction transformer, a power flow controller, a comprehensive measurement and control device and a feeder line and protection unit. The input end of the incoming line and protection unit is connected with a 35kV electric power system public power grid, and the output end is connected with the primary side input end of the V/v wiring traction transformer. The V/v wiring traction transformer is used for reducing the voltage of 35 kV to the voltage of 27.5 kV; the output end of the feeder line and protection unit is connected with a contact net and a steel rail of a section where the power supply arm alpha belongs. According to the invention, a 35kV electric power system public power grid can be directly connected nearby, so that 35kV three-phase voltage is converted into 27.5 kV single-phase traction power supply, and a long-distance power supply line does not need to be arranged near a traction substation.

    本发明公开了一种电气化铁路35kV/27.5kV辅助牵引电源及控制方法。牵引变电所馈出长距离供电线,可靠性及运营成本较高。本发明包括进线及保护单元、V/v接线牵引变压器、功率潮流控制器、综合测控装置、以及馈线及保护单元;进线及保护单元输入端与35kV电力系统公用电网连接,输出端与V/v接线牵引变压器原边输入端连接;V/v接线牵引变压器用于将35kV电压降压至27.5kV电压;馈线及保护单元输出端分别与供电臂α所属区段的接触网和钢轨连接。本发明可直接就近接引35kV电力系统公用电网,从而将35kV三相电压转换为27.5kV单相牵引供电,无需由临近牵引变电所设置长距离供电线。


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    Title :

    Electrified railway 35kV/27.5 kV auxiliary traction power supply and control method


    Additional title:

    一种电气化铁路35kV/27.5kV辅助牵引电源及控制方法


    Contributors:
    WEI GUANG (author) / HAO SHUAI (author) / LIU RUOFEI (author) / LIU GANG (author) / GONG YANSHENG (author) / WANG JILAI (author) / WU BO (author) / SUN JINGDI (author) / WANG PENGCHENG (author)

    Publication date :

    2022-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    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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