地铁车站动力照明负荷谐波问题分析

Harmonic Problem Analysis of Power and Lighting Load in Metro Station

地铁低压配电系统作为整个车站的动力照明负荷的电力来源,其电能质量问题显得尤为重要;针对地铁低压配电系统谐波问题,文章对车站动力照明负荷中的谐波产生机理进行了研究;分析了照明类、弱电类和电机类负荷三大类负荷所含电力电子电路的拓扑结构,简述了三大类负荷的工作特性及其谐波特征,为地铁低压配电系统谐波治理问题提供一定的思路。

As the power source for the power and lighting load of the whole station,the power quality problem of metro low-voltage power distribution system is particularly important.Aiming at the harmonic problems in metro low-voltage power distribution system,the harmonic generation mechanism in the station power and lighting load is studied in this paper.It analyzes the topology structure of power electronics circuits contained in the three types loads of lighting,weak current and motor loads,and expounds the working characteristics and harmonic characteristics of three types of loads,which provides certain ideas for harmonic governance problem of metro low-voltage power distribution system.