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首页> 外文期刊>Journal of Modern Transportation >Industrial frequency single-phase AC traction power supply system for urban rail transit and its key technologies
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Industrial frequency single-phase AC traction power supply system for urban rail transit and its key technologies

机译：城市轨道交通工业用频率单相交流牵引供电系统及其关键技术

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Abstract To avoid stray current and maintain the benefit of no phase-split in the DC traction power supply system, an AC traction power supply system was proposed for the urban public transport such as metro and light rail transit. The proposed system consists of a main substation (MSS) and cable traction network (CTN). The MSS includes a single-phase main traction transformer and a negative-sequence compensation device, while the CTN includes double-core cables, traction transformers, overhead catenary system, rails, etc. Several key techniques for the proposed system were put forward and discussed, which can be summarized as (1) the power supply principle, equivalent circuit and transmission ability of the CTN, the cable-catenary matching technique, and the selection of catenary voltage level; (2) the segmentation technology and status identification method for traction power supply network, distributed and centralized protection schemes, etc.; (3) a power supply scheme for single-line MSS and a power supply scheme of MSS shared by two or more lines. The proposed industrial frequency single-phase AC traction power supply system shows an excellent technical performance, good economy, and high reliability, hence provides a new alternative for metro and urban rail transit power supply systems.
机译：摘要为避免杂散电流并保持直流牵引电源系统中没有相分离的好处，提出了一种适用于地铁和轻轨等城市公共交通的交流牵引电源系统。拟议的系统包括一个主变电站（MSS）和电缆牵引网络（CTN）。 MSS包括一个单相主牵引变压器和一个负序补偿装置，而CTN包括双芯电缆，牵引变压器，架空接触网系统，铁轨等。提出并讨论了该系统的几种关键技术，可以归纳为：（1）CTN的供电原理，等效电路和传输能力，电缆类别匹配技术以及悬链电压电平的选择; （2）牵引供电网的分段技术和状态识别方法，分布式集中保护方案等; （3）单线MSS的电源方案和两条或多条线共享的MSS的电源方案。提出的工业变频单相交流牵引供电系统具有优良的技术性能，良好的经济性和较高的可靠性，为地铁和城市轨道交通供电系统提供了新的选择。

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