地铁供电系统无功补偿方案及补偿容量的研究

本文介绍了城市轨道交通供电系统的结构和影响系统功率因数的因素,提出了动态无功补偿与固定无功补偿相结合的补偿方案,选用静止无功发生器(SVG)对城轨供电系统进行动态无功补偿,并在对比地铁供电系统的三种补偿方式后,选择了集中式补偿的补偿方式,并以某地铁2号线为例进行了补偿容量的计算和补偿方案的效果分析,结果表明该方案能达到供电局系统功率因数的要求,提高电能质量,减少电费支出,又有利于整个供电系统的稳定运行和可靠性,而且性价比很高。

Research of Metro Power System Reactive Power Compensation Capacity and Scheme

The paper describes the power supply system, s structure of urban rail transit and influence factors of system power factor, designed a dynamic reactive power compensation with fixed combination of reactive power compensation package and selection of Static Var Generator （SVG） for urban rail power supply system for dynamic reactive power compensation. After comparing the three metro power compensation system select the centralized compensation. Taking a Subway Line 2 as an example of the compensation capacity of calculation and analysis of the effect of the compensation scheme, The results show that the scheme not only can achieve power factor of power supply bureau system requirements, improve power quality, reduce electricity costs, but also conducive to the stability and reliability of the entire power system operation.