The utility model relates to an electric Railway pulls and becomes enhancing power supply reliability and restrain resonance device, include: correspond the first reactor that sets up on electric indisputable traction transformer low tension side to the arm 27.5kV generating line power supply line of supplying power everywhere along the line, correspond the second reactor that sets up on arm 27.5kV generating line to the electric indisputable traction transformer low tension side power supply line of supplying power along the line everywhere, correspond and locate the parallelly connected resistor of current -limiting hollow reactor and insert the parallelly connected lead -acid battery that the single -phase used transformer low voltage top -cross of traction substation flows the single -phase generating line of 230V department through blocking capacitor with traction substation 27.5kV generating line list tuned filter. The utility model discloses reforming transform electric iron with less fund input and pulling the change, direct current transmission equipment and high -speed railway EMUs locomotive pour into the high frequency direct current pulse resonance current of electric Railway locomotive power supply major loop into in the suppression electric wire netting, can the certain degree improve stability, reliability and the security that electric indisputable locomotive moved simultaneously.