Factory test for development of energy storage system

The ESS is able to store and discharge energy extremely quickly, consequently enabling a complete exchange of energy between vehicles, even if they are not braking and accelerating at precisely the same time, as is most frequently the case in everyday service. The ESS reduces primary energy consumption without affecting transport capacity and punctuality. In addition, the ESS can stabilize the system voltage. The ESS is considered to be one of the useful devices for energy storing and recycling. This paper presents the factory test of the ESS. Characteristics with/without the ESS are also presented for comparison. The verification test in a factory focused on stabilizing voltage. The catenary voltage with the ESS did not drop. But The voltage without ESS is fluctuated. The overhead voltage is compensated.