摘要
以合蚌线为例,对牵引供电系统谐振特性进行了理论分析,证明了谐波与供电臂长、机车位置、接触网特性阻抗、传播系数以及牵引变电所等效阻抗等有关。建立牵引供电系统仿真模型,并对阻频特性、电流、电压进行测试。通过分析谐振特性影响因素,提出相应抑制措施,如在供电系统设计初期,根据车网匹配情况对供电系统进行优化设计,破坏谐振发生的基本条件,可以达到抑制谐振的目的。
Taking Hefei-Bengbu line as an example,the resonant characteristics of the traction power supply system were analyzed theoretically.It was proved that the harmonics were related to the length of the supply arm,locomotive location,characteristics impedance of the contact line,transmission coefficient and the equivalent impedance of traction substation.On this basis,the simulation model of traction power supply system was established.And the frequency characteristics,current and voltage were tested.Based on the analysis of the influence factors of resonance characteristics,the corresponding suppression measures were proposed.In the early stage of the power supply system design,the optimal design of the power supply system according to the matching condition of the vehicle network could destroy the basic condition of resonance,and achieve the purpose of inhibiting resonance.
出处
《机车电传动》
北大核心
2017年第6期73-77,92,共6页
Electric Drive for Locomotives
关键词
交直交电力机车
谐波特性
谐振
供电系统
AC-DC-AC electric locomotive
harmonic characteristic
resonance
power supply system
