基于有源滤波器的单台接线变压器仿真研究

Simulation study on single binding transformer with active filters

电气化铁道牵引供电系统三相严重不平衡,存在大量的谐波和无功,各供电区段需要用分相绝缘器分断,制约了高速铁路和重载铁路的发展。基于有源滤波器的同相供电系统的关键技术是检测补偿电流的实时性,检测的精度高低与动态响应性能好坏直接影响补偿效果。针对单台接线变压器,分析适合它的谐波和无功实时检测技术,平衡变换装置和有源滤波器的控制方法,基于MATLAB/Simulation建立了仿真模型,对单台接线变压器构成的同相AT牵引系统进行了仿真。

The Traction Power Supply System of electric railway had the shortages of three-phase unbalance,large harmonics and reactive power.It was needed phase break insulator in every supply sector,which restricted the improvement of high speed railway and heavy haul railway.The Key technologies of the Cophased Supply System with active filters was real-time detecting of compensating currents.The degree of the detecting precision and the quality of dynamic responses affected the effects of compensation.Focused on single transformers,it was analyzed for its harmonic and reactive real-time detecting technology,balance transformer and active filter control technology.At the end,it was built single transformer simulation mode by MATLAB / Simulation,simulated the AT Traction System of same phase to single transformer.