Stationary energy storage devices can substantially enhance the recovery of braking energy in DC systems. The energy stored along the track or at substations can be used for traction purposes either by the same or by other trains. Apart from energy savings, stationary storage equalizes the variation of power demand and has thus a stabilising effect on catenary voltage.
Technology field:Regenerative braking and energy management
General information
General criteria
Environmental criteria
Economic criteria
Vehicle - fix costs: none
(no details available)
Vehicle - running costs: significant reduction
Energy costs are substantially reduced by two effects:
Energy demand is reduced
Energy price is reduced due to reduced demand peaks
Infrastructure - fix costs: high
Currently investment costs for energy storage systems are high.
The Cologne pilot project was sponsored by the “Life” Program of the EU. Data on costs are not available.
Infrastructure - running costs: increased
Storage systems increase the complexity of the system and require a certain degree of maintenance.
Scale effects: high
Dropping prices of storage systems.
Amortisation: (no data)
(no details available)
Application outside railway sector (this technology is railway specific)