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由于大量使用交一直型电力机车,因此产生一个非常突出的问题,那就是我国电气化铁道含有大量的负荷谐波。针对这个问题,我国电气化往往采用的方法是将三次单调谐滤波器安装在牵引变电所中,但是这种方式并不能产生理想的滤波效果。如果采用的是有源电力滤波器,那么就可以克服无源电力滤波器的缺点,比如滤波能力方面不足、系统参数会在很大程度上影响到滤波特性以及可能会放大谐波的现象等,从而对谐波有效的进行限制。但是,有源电力滤波器有着较高的成本,因此有个非常好的方法,就是有效的结合有源电力滤波器和无源电力滤波器。本文简要分析了牵引供电系统混合滤波器的设计,希望可以提供一些有价值的参考意见。
Due to the extensive use of AC-DC electric locomotives, there is a very prominent problem that our country's electrified railway contains a lot of load harmonics. In response to this problem, the method we often adopt in electrification of our country is to install the third monomodulation filter in the traction substation, but this method does not produce the ideal filtering effect. If you use the active power filter, then you can overcome the shortcomings of passive power filter, such as the lack of filtering capacity, the system parameters will largely affect the filtering characteristics and may amplify the harmonic phenomenon, Harmonic effective limit. However, the active power filter has a high cost, so a very good way is to effectively combine the active power filter and the passive power filter. This article briefly analyzes the hybrid design of traction power supply system, hoping to provide some valuable reference.