Hello, I need to plan the capacity of stationary energy storage device for DC tram service, which has an acceleration current is almost 800A. And such 2 trams are running in one section, where I want to build a stationary energy storage device. My priority would be a flywheel. During brakes, Tram can generate nearly 600 A (negative value). The voltage of a line is 800V, the substation which does supply has a capacity of 2500A. I have taken measurements with segments of 75 ms (10^-3seconds) of traction current in A and voltage in V or power in kW. I would like to know which parameters I should take into consideration while doing a calculation?

Thank you for your interest.