高速铁路供电系统车网耦合下谐波谐振特性研究.PDFVIP

高速铁路供电系统车网耦合下 谐波谐振特性研究 崔恒斌 冯晓云 李金健 （西南交通大学电气工程学院成都 四川 610031 ） 摘要 为分析车网耦合特性对高速铁路牵引供电系统谐波谐振特性的影响，基于双边傅里叶 级数与贝塞尔函数，推导出流入高速列车谐波负荷电流的计算公式，提出了一种考虑车网电气耦 合特性的高速列车负荷模型。基于模态分析方法，通过计算含列车牵引供电网络系统节点导纳的 特征根与特征向量，获取牵引网络谐振信息；通过算例对比分析说明列车负荷特性对谐波谐振特 性的影响；研究了牵引网谐波谐振频率随列车工作模式、位置及列车数目的变化规律；最后讨论 分析在变电所、AT 所与分区所分别并联阻性、容性与感性元件对牵引网络谐振频率的影响。 关键词：高速列车 车网耦合 负荷模型 谐波谐振 中图分类号：TM922 Research of Harmonic Resonance Characteristic of High-speed Railway Power Supply System Considering Coupling of Trains and Traction Nets Cui Hengbin, Feng Xiaoyun, L i Jinjian (Electrical Engineering School of Southwest Jiaotong University, Chengdu, China, 610031) Abstract A new high-speed train load model considering the coupling of trains and traction nets is presented. Based on double Fourier series and Bessel function, harmonic calculation formula of the load current of a high-speed train is deduced, and then the train load model is established. Eigenvalues of the node admittance is calculated to acquire the resonance information of the traction net with modal analyze method, and examples are shown to compare the influences of different train load models on resonance characters. Changes of harmonic resonance frequencies with respect to different working modes, positions and numbers of trains are studied. In the end, the influences of a paralleled resistance, capacitor or inductance in a substation, a AT station or a section post on the resonance frequencies are discussed. Keywords：high-speed train, coupling of trains and traction nets, load model, harmonic resonance 1 引言1 网耦合研究领域的一个重大研究课题。由于交-直- 交型高速列车作为移动式的时变非线性负载，与牵 高速铁路具有速度等级高、功率容量大和线路 引供电网之间存在着非线性强耦合关系，当列车负 行车车辆密集化等特点。高速