The invention provides an off-grid new energy driven alternating current traction power supply system, which belongs to the technical field of electrified railway traction power supply, and comprises a new energy traction substation, a contact network and a steel rail, the new energy traction substations are connected to the contact networks and supply power to the contact networks, and contact network electric split phases are arranged between the contact networks of the two adjacent new energy traction substations; wherein when the railway line is a double-row line, the section post is arranged at the electric split-phase position of the overhead line system, and the section post internally comprises a plurality of cross-zone switches and two sections of alternating current buses. A public power grid is not needed, the traction load is driven only by new energy power supply, the new energy traction substation is connected with the direct current ends of the main power generation system, the standby power generation system and the energy storage system through the same direct current bus, each system is provided with an independent converter, real-time adjustment of internal electric energy is achieved, the energy circulation path is short, adjustment is more flexible, and the energy utilization efficiency is improved. The common converter and the transformer are connected to the AC bus, so that the number of transformers is reduced.
本发明提供一种离网型新能源驱动的交流牵引供电系统,属于电气化铁路牵引供电技术领域,包括新能源牵引变电所、接触网、钢轨;新能源牵引变电所连接至接触网并向其供电,在两个相邻新能源牵引变电所的接触网之间设置接触网电分相;其中,当铁路线路为双行线时,接触网电分相处设置所述分区所,分区所内包括多个越区开关和两段交流母线。本发明实现了无需公用电网、仅由新能源供电驱动牵引负荷,新能源牵引变电所由同一个直流母线连接主用发电系统、备用发电系统、储能系统的直流端,每个系统均有独立的变流器,实现内部的电能实时调节,能量流通路径短、调节更加灵活,共用变流器、变压器连接于交流母线,减少了变压器数量。
Off-grid new energy driven alternating current traction power supply system
离网型新能源驱动的交流牵引供电系统
2023-07-04
Patent
Elektronische Ressource
Chinesisch
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