基于多目标综合控制的低碳轨道交通操控节能方案

提出一种应用于轨道交通供电系统的多目标综合控制节能方案。采用可控高功率因数整流的AC/DC变流模块取代传统的整流电路以实现能量的双向流动,并采用多个AC/DC变流模块并联的形式来扩大整个方案容量,同时在直流牵引母线处装有一台或多台并联DC/DC变流模块,使机车制动时产生的电能可部分通过AC/DC模块回馈到电网,部分通过DC/DC模块升压后存储到独立电容器组。研究表明,该方案不仅可以充分回收及利用制动能量,并通过部分吸收回馈能量来克服所有能量瞬时回馈电网对电网的冲击,还可以通过对牵引变电站谐波及无功的补偿改善轨道交通变电站的电能质量,从各个角度提升节能功效。

Low carbon rail transit control mode based on integrated multi-objective control model

In response to low carbon, the paper presented a novel low carbon rail transit control mode based on integrated multi-objective control model. Traditional rectifier circuit was replaced by controllable high power factor rectification of AC/DC converter module for energy flow, and parallel form of multiple AC/DC converter modules were used to expand the program capacity. One or more paralleled DC/DC converter modules were set in DC traction bus, so the locomotive braking power can be feed back to the grid partly through the AC/DC module, and partly stored to independent capacitors through the boost DC/DC module. The conclusion showed that the program can not only make full recovery and use of braking energy, but also reduced the impact of instantaneous energy on power grids through all absorbed energy. At the same time, harmonic and reactive power compensation on traction substation may greatly improve the power quality and energy efficiency of rail transit in all aspects.