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Stationary energy storage |
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evaluated |
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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.
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Technology field: Regenerative braking and energy management
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General information
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General criteria
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Environmental criteria
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Economic criteria
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Application outside railway sector (this technology is railway specific)
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Overall rating
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Overall potential: promising |
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Time horizon: mid-term |
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The installation of stationary energy storage capacity is one of several measures to increase the effectiveness of braking energy recovery in DC networks. Existing experience shows both technological feasibility and high energy saving potential. However, investment costs are high. Therefore the measure may be limited to hot spots of the network. Too little is known about the compared profitability between stationary storage and the two alternative technologies: on-board storage and inverter equipment for substations. More research is needed in this area. |
date created: 2002-10-09 |
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© UIC - International Union of Railways 2003 |
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