列车再生制动对接触网电压影响研究和对策

Research and countermeasures on the influence of train regenerative braking on catenary voltage

大功率交直交列车再生制动功率大,再生制动能量反送回牵引供电系统时,将引起牵引网及接触网电压抬升,尤其当机车位于长大坡道区段制动时,易出现车辆制动性能下降、接触网电压下降、变电所保护跳闸等现象,影响了牵引供电系统的安全和运行。为解决列车再生制动引起的车网电气耦合问题,基于WEBANET仿真软件,模拟分析CRH380AL和HXD1机车在最大制动功率制动时对牵引网及接触网电压的影响,并针对再生制动引起的牵引网及接触网电压升高提出了加装吸能、储能装置、变压器设置有载调压开关、同相供电等措施,并通过仿真验证其有效性。

The regenerative braking power of high-power AC-DC-AC train is high,when the regenerative braking energy is returned to the traction power supply system,it will cause the voltage rise of traction network and catenary.Especially when the locomotive is braking in the long ramp section,it is easy to reduce the braking performance of vehicle,the voltage drop of catenary and the protection trip of substation,which affects the safety and operation of traction power supply system.In order to solve the electrical coupling problem of train network caused by train regenerative braking,by analyzing the measured traction network voltage when the regenerative braking power is maximum,based on WEBANET simulation software,simulate and analyze the influence of CRH380AL and HXD1 locomotives on the traction network and catenary voltage when braking at the maximum braking power,and put forward the installation of energy absorption and energy storage devices for the voltage rise of traction network and catenary caused by regenerative braking the transformer is equipped with on load voltage regulating switch,inphase power supply and other measures,and its effectiveness is verified by simulation.