新型同相牵引供电系统设计与评估.pdf

·900 · 2008 全国博士生学术论坛电气工程论文集 新型同相牵引供电系统设计与评估 陈民武 李群湛 张丽艳 西南交通大学电气工程学院 四川 成都 610031 【摘 要】 电气化铁道常规牵引供电系统存在大量的负序、谐波和无功，同时相邻供电区段需要用分 相绝缘器分隔，从而严重制约了高速、重载铁路的发展，新型同相牵引供电系统可以从根 本上解决这些问题。本文讨论了同相牵引供电系统中牵引变压器的综合选型，建立了直供 和 AT 供电方式下基于 YNvd 接线变压器的同相牵引供电系统，推导了变压器和综合潮流 控制器的理论设计容量，并对系统的控制模式和运行方式进行了分析，最后对推广应用同 相牵引供电系统的经济性进行了评估，分析表明同相牵引供电系统的推广利用可以实现铁 路、电力部门的双赢。 【关键词】 同相牵引供电系统；YNvd 接线变压器；计算容量；经济性评估 Design and Evaluation of New Cophase Traction Power Supply System Chen Minwu Li Qunzhan Zhang Liyan School of Electric Engineering ，Southwest Jiaotong University ，Chengdu 610031 ，Sichuan ，China Abstract ：The problems exist in the general traction power supply system of electrified railway ，such as abundant negative sequence 、harmonics 、reactive power and the neutral section insulator installed between adjacent power supply sections ，lay restraints on development of high-speed and heavy-load railways. New cophase traction power supply system can solve these problems radically. In this paper ，comprehensive choice of transformer in cophase traction power supply system is discussed ，the direct and AT power supply modes of system are set up ，and the theoretical design capacities of YNvd connected transformer and comprehensive power flow controller （CPFC）are calculated ，then the control and operation modes of system are analyzed. Finally ，the economic evaluation of cophase traction power supply system is described. It is found that cophase traction power supply system is the plan to achieve a win-win result of railway and power department