交流传动机车与直流传动机车混合运用条件下牵引网电压控制技术  

Traction Network Voltage Control Techniques under the Condition of Hybrid Application of AC Drive and DC Drive Locomotives

作　　者：李强 吴命利[2] 

机构地区：[1]中国铁路总公司科技管理部,北京100844 [2]北京交通大学电气工程学院,北京100044

出　　处：《铁道学报》2014年第8期19-24,共6页Journal of the China Railway Society

基　　金：中国铁路总公司科技研究开发计划(2013J010-A);中央高校基本科研业务费专项资金(2012JBZ006)

摘　　要：在大秦重载铁路上,担当万吨和两万吨重载列车牵引任务的即有HXD1型、HXD2型交流传动电力机车,也有SS4型直流传动电力机车。由于这两种电力机车具有不同的电气负荷特性,在大秦线的部分区段,保持牵引变电所母线电压处在适当水平成为一个需要解决的技术问题。结合算例,本文给出因SS4型电力机车功率因数低而导致的网压降低和HXD1型电力机车再生制动引起的网压升高的仿真计算结果,分析电源短路容量、牵引变压器、无功补偿装置以及牵引网阻抗对网压变动的影响。对包括使用有载调压牵引变压器、有载调压自耦变压器、晶闸管控制串联变压器、串联电容器和功率平衡调节器等在内的不同改善网压技术方案进行比较。基于现代电力电子技术的功率平衡调节器不但能有效稳定网压还能综合治理电能质量,有望为该问题提供最佳解决方案。Both the AC drive locomotives , HXD1 and HXD2 , and the DC drive locomotive , SS4 , are designated for 10 000 t and 20 000 t heavy-duty haul on the Datong-Qinhuangdao Heavy-haul Railway Line . Due to the distinct electric loading characteristics of these two types of locomotives , how to maintain the bus bar voltage in traction substations in some sections of the Line at an appropriate level has become a technical issue to be handled .By a numerical example , the voltage drop caused by the low power factor of Locomotive SS4 and the voltage rise caused by the regenerative braking of Locomotive HXD1 were computed . The influences of the power source capacity , the traction transformer , the reactive power compensator and the impedance of the traction network on the voltage variations were analyzed . Different voltage improving schemes , including those schemes with use of the on-load tap changing traction transformer , the on-load voltage regulating auto-transformer , the thyristor controlled series transformer , the series capacitor and the power balance condition-er , were compared . Utilizing the modern power electronics technology , the power balance conditioner can stabilize voltage levels effectively and tackle power quality problems in a comprehensive way , so it may turn out to be the optimal solution .

关 键 词：牵引变电所 电压控制 电力机车 功率平衡调节器 

分 类 号：U224[交通运输工程—道路与铁道工程]