牵引变电站无功补偿和谐波治理的研究

Research on Reactive Power Compensation and Harmonic Restraint in Traction Substation

电气化铁道在全国铁道系统中都有了很大的发展,然而运行中易产生严重的负序电流、谐波、无功及负荷波动,对电能质量有一定程度的影响。为此,在对牵引系统负荷特性进行分析的基础上,提出将有源滤波器接入牵引变电站的控制方案,并通过仿真实验对该方案进行了验证,得到了良好的谐波抑制的效果。

Electric railways have witnessed great development in Chinese railway system; however, the serious negative- sequence current, harmonics, reactive power and load fluctuation during the running process influence the electric power quality. Upon analysis of the load characteristics of traction system, a control scheme of introducing the active filter into the traction substation is presented. It is verified by simulation that the scheme is efficient in harmonic suppression.