The invention discloses a photovoltaic distributed grid-connected system along a railway. According to the system, photovoltaic arrays PV1 and PV5 located in a power supply arm tail end area pass through a two-stage grid-connected converter and a transformer and then are connected between a contact line T of a transformer located in a power supply arm tail end partition station AT and a steel rail R in parallel; the photovoltaic arrays PV2 and PV4 in the middle area of the power supply arm are connected in parallel between a contact line T of the AT transformer in the middle of the power supply arm and a steel rail R after passing through the two-stage grid-connected converter and the transformer; the alternating current sides of the back-to-back converters at the traction substations are respectively connected to secondary side outlets at the left and right sides of the traction transformer through transformers; a photovoltaic array PV3 in a traction substation area passes through a DC/DC boost converter, and an energy storage device passes through a bidirectional DC/DC converter and then is connected to a direct current bus led out of an intermediate direct current link of a back-to-back converter.

    本发明公开了一种铁路沿线光伏分布式并网系统,系统包括:处于供电臂末端区域的光伏阵列PV1、PV5通过两级式并网变流器与变压器后并联接入位于供电臂末端分区所AT变压器的接触线T与钢轨R间;处于供电臂中间区域的光伏阵列PV2、PV4通过两级式并网变流器与变压器后并联接入位于供电臂中间AT变压器的接触线T与钢轨R间;处于牵引变电所处的背靠背变流器交流侧通过变压器分别接在牵引变压器左右两侧的次边出口;处于牵引变电所区域的光伏阵列PV3经过DC/DC升压变换器、储能装置经过双向DC/DC变换器后接入背靠背变流器中间直流环节引出的直流母线。


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    Title :

    Photovoltaic distributed grid-connected system along railway


    Additional title:

    一种铁路沿线光伏分布式并网系统


    Contributors:
    WANG KE (author) / HU HAITAO (author) / LIAO HAIZHU (author) / GAO YINING (author) / HUANG YI (author) / HE ZHENGYOU (author)

    Publication date :

    2024-03-01


    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 / 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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