中文摘要：

动车组电气负荷建模对牵引供电系统的设计以及电能质量相关问题的评估具有重要意义。本文基于大量实测数据,采用曲线拟合和概率统计方法,针对CRH2-200型高速动车组建立谐波电流模型,模拟受众多随机因素影响的动车组谐波概率分布特征。所建立的仿真算法求解速度快,且结果更接近实际情况。将其与牵引计算程序相结合,可用于构建一个具有快速数据交换能力的实用仿真平台。

英文摘要：

It is significant in design of traction power supply systems and evaluation of relative power quality problems to build a proper electric load model for the electric multiple units（EMU）.On the basis of a large amount of measured data from railway lines,this paper presents a harmonic current modeling method using the curve-fitting and probabilistic statistics techniques for CRH2-200 high speed EMU,which can simulate the probabilistic properties of EMU harmonic currents influenced by many stochastic factors.This modeling method can simulate the practical situation in a better way and the algorithm has a high speed.When combined with the computer program of train traction calculation,the model can be embedded to build an efficient simulation system with rapid data-exchanging ability.