电气化铁道贯通同相供电变电所控制策略研究  

Study on Control Strategy of Continuous Co-phase Power Supply Substions of Electrical Railways

作　　者：夏焰坤[1] 李群湛[1] 解绍锋[1] 陈民武[1] 郭鑫鑫[1] 赵元哲[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道学报》2014年第8期25-31,共7页Journal of the China Railway Society

基　　金：国家科技支撑计划(2007BAA12B05);铁道部科技研究开发计划(2012J012-E);国家自然科学基金(51307143)

摘　　要：针对现行换相式和同相牵引供电系统的特点,分析一种采用直接三相-单相交直交变换型贯通同相供电系统方案。该方案既能解决牵引供电系统电能质量问题,又能取消掉牵引网上的薄弱环节"电分相",有利于高速、重载机车实现全线贯通运行。针对贯通供电变电所控制方式,提出采用直接功率控制策略。该方法以瞬时无功理论为基础,控制三相侧和单相侧功率交换。仿真结果表明,在有功和无功指令突变的情况下,变流器能够进行快速跟踪指令,有良好的控制效果。To slove the problems with the current phase-change and cophase traction power supply systems , the continuous cophase traction power supply system with direct three phases to single phase AC-DC-AC conver-sion was proposed . The new power supply scheme was able to supply power without quality problems , remove neutral sections , the weak link of the traction network ,and provide favourable conditions to realize continuous traffic of high-speed heavy-load trains over the w hole journey . In view of the substation control mode , the di-rect power control strategy was suggested .On the basis of the instantaneous reactive power theory ,active and reactive power conversion between the three-phase and single-phase sides was controlled . Simulation results show that in the case that active and reactive power instructions change suddenly , the current converter can fast trace the instructions , thus producing good control effect .

关 键 词：贯通同相供电系统 电能质量 电分相 瞬时功率理论 控制策略 

分 类 号：U223[交通运输工程—道路与铁道工程]