摘要
本文在对牵引供电系统中交直交机车运行原理分析的基础上,建立了以有功功率、功率因素、直流侧电压3个指标作为参考的CRH380B型机车简化模型,并采用PSCAD/EMTDC搭建了电力机车-牵引网-电网牵引负荷联合仿真模型,通过仿真分析了运行参数AT变压器漏抗、外部电源容量(电网容量)、牵引变压器容量对电网电流谐波的影响。仿真结果表明,AT变压器漏抗、牵引变压器容量对电网电流谐波有影响较大,而外部电源容量对电网电流谐波的影响较小。
Based on the analysis of the operation principle of AC-DC-AC locomotive in traction power supply system, this paper established a simplified model of CRH380B with active power, power factor, DC side voltage as a reference, and the united model of traction loads of electric locomotive, traction network and power system by PSCAD/EMTDC, analyzed what impact would have on grid current harmonics for AT transformer leakage reactance, the extemal power supply capacity （network capacity）, the impact of traction transformer capacity by simulation. Simulation results showed that AT leakage reactance transformer, traction transformer capacity had a greater impact on the grid current harmonics, and current harmonics was less affected by the external oower supply capacity.
出处
《电气技术》
2017年第2期31-35,共5页
Electrical Engineering
关键词
高速牵引供电
机车
电网谐波
仿真
high-speed traction power supply
locomotive
harmonic of the grid
simulation
