According to a high-voltage direct-current urban rail transit traction power supply system, the input voltage of a main substation is converted into +/-10 kV or direct currents of other voltage classes and distributed to all traction substations, the output positive voltage of a direct traction station is connected to a traction network, and the output zero voltage of the direct traction station is connected to a walking rail. If a negative voltage output by the direct traction station is connected to the return line and the three-end voltage output by the direct current AT in the direct current autotransformer station is respectively connected to the traction network, the running rail and the return line, the direct current AT power supply system is formed. The multifunctional DC transformer in the direct traction station can realize bidirectional energy flow, so that high-voltage DC buses of stations such as a main substation, the direct traction station and a direct coupling stationand all DC capacitors on a traction network can be used as energy buffers during train braking, and the problem of train braking energy utilization is solved from the source. In addition, the systemcan effectively reduce rail potential and stray current.

    本发明所述的高压直流城市轨道交通牵引供电系统,是把主变电所的输入电压变换成±10kV或其他电压等级直流电并配送到各牵引变电所,直牵所输出正电压连接到牵引网、输出零电压连接到走行轨。如果再把直牵所输出负电压连接到回流线,并把直流自耦变压器所中的直流AT输出的三端电压分别连接到牵引网、走行轨和回流线,就构成了直流AT供电系统。直牵所里的多功能直流变压器可实现能量双向流动,使得主变电所、直牵所和直耦所等站场的高压直流母线和牵引网上所有直流电容都能成为列车制动时的能量缓存器,从而在源头上解决了列车制动能量利用问题。此外,该系统还能够有效地降低轨道电位和杂散电流。


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    Titel :

    High-voltage direct-current urban rail transit traction power supply system


    Weitere Titelangaben:

    高压直流城市轨道交通牵引供电系统


    Beteiligte:
    ZHENG QIONGLIN (Autor:in) / YANG XIAOFENG (Autor:in) / WANG MIAO (Autor:in) / GU JINGDA (Autor:in) / YOU XIAOJIE (Autor:in) / LIU JIANQIANG (Autor:in) / LI HONG (Autor:in)

    Erscheinungsdatum :

    2020-05-12


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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



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