基于车网耦合的高速铁路AT供电系统谐振特性

发布时间：2018-03-28 11:36

本文选题：高速铁路　切入点：AT供电系统　出处：《西南交通大学学报》2014年04期

【摘要】：为研究高速列车与AT供电系统之间电气耦合(简称车网耦合)引起的谐波谐振,构建了基于节点导纳方程的高速铁路AT供电系统数学模型和基于高速列车功率源特性以及等效阻抗的谐波源模型,提出了基于车网耦合的高速铁路AT供电系统谐波谐振评估算法,研究了3种AT供电模式、3种AT牵引网运行方式以及不同AT变压器漏感大小对系统谐振特性的影响,分析了系统阻频特性与相频特性,指出并联和串联谐振点及其变化规律.仿真分析表明:列车位于不同AT段时3种AT供电模式下并联谐振点和串联谐振点均存在差异,牵引供电系统运行方式的多变性也造成了串联和并联谐振点的偏移,AT漏抗越大则谐振点数目越多而第1个串联谐振点频率越低.
[Abstract]:In order to study the harmonic resonance caused by electrical coupling between high-speed train and AT power supply system, The mathematical model of AT power supply system of high-speed railway based on node admittance equation and the harmonic source model based on the characteristics of power source and equivalent impedance of high-speed train are constructed. The harmonic resonance evaluation algorithm of AT power supply system in high-speed railway based on vehicle-network coupling is proposed. The effects of three AT power supply modes and three AT traction network operation modes on the resonant characteristics of AT power supply system are studied, as well as the leakage inductance of different AT transformers. The characteristics of system resistance frequency and phase frequency are analyzed, and the parallel and series resonance points and their variation rules are pointed out. The simulation results show that there are differences between parallel resonance points and series resonance points under three AT power supply modes when trains are located in different AT sections. The variation of the operation mode of traction power supply system also causes the offset AT leakage reactance of series and parallel resonance points to increase the number of resonance points and the frequency of the first series resonance point.
【作者单位】：西南交通大学电气工程学院;
【基金】：国家自然科学基金资助项目(U1134205,51307143) 中央高校基本科研业务费专项资金资助项目(2682013CX019)
【分类号】：TM711

【相似文献】