高速铁路动车组并网运行系统低频振荡特性研究

Research on Low Frequency Oscillation Characteristics of High-speed Railway EMUs in Grid-connected Operation System

我国电气化铁路的高速发展对车网系统的安全稳定运行提出了更高的要求,因此深入研究高速铁路动车组运行系统的电气稳定性具有重要的实际意义。以CRH5型动车组为研究对象,首先建立了CRH5型动车组及车网系统的状态空间模型;其次计算了单车及多车运行车网系统中存在的低频振荡模式,分析了运行参数及控制参数对不同低频振荡模式的影响;最后在MATLAB/Simulink中搭建了时域仿真,验证了理论分析的正确性。

The rapid development of China electrified railway puts forward higher requirements for the safe and stable operation of the train network system.Therefore,it is of great practical significance to deeply study the electrical stability of the high-speed railway EMU operating system.The CRH5 EMU is taken as the main research object in this paper.Firstly,the state space model of the CRH5 EMU and the vehicle network system is established.Secondly,the low-frequency oscillation modes existing in the single-vehicle and multi-vehicle network systems are calculated,and the influence of operating parameters and control parameters on different low-frequency oscillation modes is analyzed.Finally,a time domain simulation is built in MATLAB/Simulink to verify the correctness of the theoretical analysis.