SS4G型电力机车在直供式牵引供电系统中的谐波分析与测试

本文以SS4G型电力机车为例，建立SS4G型电力机车在直供式牵引供电系统中的数学模型；并对电力机车牵引工况主电路采用的不等分四段桥式整流电路进行分析；然后对可能产生谐波最多的SS4G型电力机车在第一段整流桥工作在牵引状态时进行了仿真分析，得出机车在此状态下的谐波电流分布特性；最后利用电能质量测试仪器U902对第一段整流桥工作在牵引状态时的谐波电流进行了现场测试，测试数据表明与仿真结果基本吻合，证明了论文的分析和仿真结果正确合理。

Harmonic Analysis and Test of SS4G Type Electric Locomotive in Direct Traction Power Supply System

This paper use electric locomotive SS4G as an example, establish a mathematical model of the SS4G electric locomotive direct supply traction power supply system; analyze the unequal divided four bridge rectifier circuit which is the main one of the electric locomotive traction conditions; make a simulation analysis to the SS4G electric locomotive which may be the most possible type to produce the harmonic in the first section of the rectifier which work at the state of traction; Finally, use power quality testing instruments U902 to do the spot test to the harmonic current of the first section of the rectifier bridge work in the state of traction, the test data shows agreement with the simulation results and it is proved that the analysis and simulation results of the thesis is correct and reasonable.