The invention belongs to the technical field of rail transit, and particularly relates to an active backflow traction power supply system applied to urban rail transit and a control method of the active backflow traction power supply system. The system is composed of a backflow cable, an active impedance regulator and a backflow node connecting the backflow cable and a walking rail, the system is directly connected in parallel in an existing traction power supply system of the urban rail transit, and the system has two typical control methods: one is that the output voltage of the active impedance regulator is adjusted, and the output voltage of the active impedance regulator is adjusted; secondly, the track potential at the negative electrode end of the traction substation is controlled to be zero by adjusting the output voltage of the active impedance regulator; according to the system, all or part of the return current of the running rail is effectively transferred to the return cable, the return current of the running rail is directly reduced, and the rail potential and stray current leaked by the running rail during running of a train are further reduced.
本发明属于轨道交通技术领域,具体地说,涉及一种应用于城市轨道交通的有源回流牵引供电系统及其控制方法;本系统由回流线缆、有源阻抗调节器和连接回流线缆与走行轨的回流节点构成,直接并联于现有的城市轨道交通牵引供电系统中,本系统具备两种典型控制方法,一是通过调整有源阻抗调节器的输出电压,抵消回流线缆在回流节点到牵引变电所负极产生的电压降,二是通过调节有源阻抗调节器的输出电压,将牵引变电所负极端处的轨道电位控制为零;本系统有效转移了全部或部分走行轨回流电流至回流线缆,直接减少了走行轨的回流电流,进而降低了列车运行时的轨道电位以及走行轨泄漏的杂散电流。
Active backflow traction power supply system applied to urban rail transit and control method of active backflow traction power supply system
一种应用于城市轨道交通的有源回流牵引供电系统及其控制方法
2024-10-22
Patent
Electronic Resource
Chinese
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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