交流电力机车在牵引网引起的高频谐振电压及其防护

High-frequency Resonant Voltage Caused by AC Electric Locomotive in the Traction Network and Its Protection

从交流电力机车变流器调制电压谐波源出发,论述了牵引网高频谐振电压的生成原理。对各种牵引网区段、不同波频率的交流车及消谐防护措施进行了系统仿真,得出牵引网谐振电压变化规律。在区段两端设置阻尼滤波器能有效消除谐振电压影响。对不同影响对象提出了防护措施意见。

Based on the harmonic source of converter＇s modulation voltage of AC electric locomotive, it discussed the generation principles of high frequency resonance voltage of traction network. The system simulations were carried out for AC locomotives with different traction network sections, various chopper frequencies and protection measures for harmonic elimination, from which the variation rule of the traction resonant voltage was obtained. Both ends of the damping filter can effectively eliminate the influence of harmonic voltage. The ideas of protective measures were put forward on the effects of different objects.