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Capacitor storage type regenerative braking energy utilization device is applied to urban rail transit. The device stores the energy generated during train regenerative braking in the super capacitor and releases it into the traction network when the train is in traction, thus realizing the reuse of train regenerative braking energy, improving the quality of DC power supply, reducing gate tile wear, and improving the tunnel environment. The device adopts multi-module interleaved parallel connection, energy only in the DC system, no impact on the AC grid, the capacity of the device can meet the train braking requirements, to ensure that the train electric braking function play.