This paper introduces the main standards of single-phase AC Traction Power Supply System (TPSS) in different countries, summarizes the various methods of passing neutral section adopted by different countries to solve the problems which restrict the development of single-phase AC TPSS and addresses the corresponding measures to improve power quality. The domestic and foreign technologies of co-phase traction power system are compared and the foreign technologies worthy of reference for our country are pointed out. Finally, a "green"TPSS is described based on existing key technologies and background combined with energy storage and new energy, providing new ideas for the development of single-phase AC TPSS.%介绍各国主要单相交流牵引供电制式,总结各国为了解决制约单相交流牵引供电系统发展的电分相问题所采取的多种过分相方式,为了解决电能质量问题所采取的各有侧重点的治理措施,对比国内外同相供电技术并指出国外技术中值得我国借鉴之处,最后基于已有关键技术并结合储能和新能源等背景描绘了"绿色"牵引供电系统,为单相交流牵引供电系统的发展提供新思路.
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