组合式同相供电设备工作原理及保护研究  

Study on Working Principle and Protection for Combined Co-phase Power Pupply Equipment

作　　者：郭培健 嵇世卿 刘娟 何晋伟 白洋[1,4] 郭岩 GUO Peijian;JI Shiqing;LIU Juan;HE Jinwei;BAI Yang;GUO Yan(National Engineering Research Center for Electrical Transmission,Tianjin 300180,China;Shenzhen Baoan Renda Electrical Appliance Industrial Co.,Ltd.,Shenzhen 518108,Guangdong,China;School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,China;Tianjin Tianchuan Electric Control Equipment Test Co.,Ltd.,Tianjin 300180,China;First Military Representative Office of the Air Force Equipment Department in Shenyang,Shenyang 110000,Liaoning,China)

机构地区：[1]电气传动国家工程研究中心,天津300180 [2]深圳市宝安任达电器实业有限公司,广东深圳518108 [3]天津大学电气自动化与信息工程学院,天津300072 [4]天津天传电控设备检测有限公司,天津300180 [5]空军装备部驻沈阳地区第一军事代表室,辽宁沈阳110000

出　　处：《电气传动》2022年第24期12-17,共6页Electric Drive

基　　金：深圳市技术研究开发计划项目(重2020N034);2021年产业技术基础公共服务平台项目(2021-H028-1-1);重点装备制造行业碳达峰、碳中和公共服务平台项目(JC2021ZK001)。

摘　　要：由于牵引供电系统的结构和负荷的特殊性,三相供电系统会发生严重不平衡,制约了高速、重载铁路的发展。详细介绍了一种单-三相组合式同相供电系统的结构,该系统不仅能够从根本上改善电能质量,还消除了牵引变电所出口处的电分相环节。首先,重点分析了其基于两“背靠背”单相变流器的同相供电设备的平衡变换原理;其次,分析了交直交变流器、高压匹配变压器、牵引匹配变压器等设备的保护要求,研究了同相供电设备的继电保护方案,并简要讨论了整定计算原则。最后采用Matlab/Simulink对组合式同相供电系统建立仿真模型。所提出的单-三相组合式供电系统已在沙峪变电所投入试运行,验证了该系统的可行性。Due to the special characteristics of the structure and load of the traction power supply system,serious imbalances can occur in the three-phase power supply system,which restricts the development of highspeed,heavy-haul railways.The structure of a single-three-phase combined co-phase power supply system was introduced in detail.The system can not only radically improve power quality,but also eliminates the electrical splitting link at the exit of the traction substation.Firstly,the balance transformation principle of co-phase power supply equipment based on two“back-to-back”single-phase converters was analyzed.Secondly,the protection requirements of AC-DC-AC converter,high voltage matching transformer and traction matching transformer were analyzed,the relay protection scheme of co-phase power supply equipment was studied,and the setting calculation principle was briefly discussed.Finally,Matlab/Simulink was used to establish the simulation model of the combined co-phase power supply system.The proposed single-three-phase combined power supply system has been put into trial operation at the Sha Bath substation to verify the feasibility of the system.

关 键 词：单-三相组合式同相供电系统 同相供电设备 继电保护 仿真分析 

分 类 号：TM28[一般工业技术—材料科学与工程]