城市轨道交通直流牵引供电系统接入对电网电能质量影响的分析

Analysis on Integration Effect of DC Traction Power Supply System for Urban Rail Transit on Grid Power Quality

摘要:

文中首先建立了城市轨道交通直流牵引供电系统接入电网的仿真模型；然后，阐述了电能质量评估指标，提出了结合城轨机车工况、数量组合两个维度的仿真场景设置方案；最后，以成都市轨道交通为例，仿真分析了接入点的电压偏差、谐波电压和谐波电流。

Abstract:

The simulation model of DC traction power supply system for urban rail transit connected to power grid is established. And then the evaluation index of power quality is expounded, and a simulation scenario setting scheme is proposed based on two dimensions of urban rail locomotive working condition and quantity combination. At last, taking Chengdu rail transit for example,the voltage deviation, harmonic voltage and harmonic current of access point are simulated and analyzed.