Storage in electrified transport systems

Today electrified transport systems such as underground systems, light railways, trolley bus systems and cable car railways will quickly see the development of electric vehicles with onboard energy storage to be recharged through various kind of charging stations.These systems are usually connected...

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Bibliographic Details
Main Authors: Barsali, S., Bechini, A., Giglioli, R., Poli, D.
Format: Conference Proceeding
Language:English
Subjects:
Batteries
Battery storage plants
Bridge circuits
Commutation
DC-DC power converters
Power cables
Power system harmonics
Reactive power
Reactive power control
Thyristors
Transportation
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Summary:Today electrified transport systems such as underground systems, light railways, trolley bus systems and cable car railways will quickly see the development of electric vehicles with onboard energy storage to be recharged through various kind of charging stations.These systems are usually connected to the grid through a static AC/DC conversion system, which can either be a line com-mutated converter or a force commutated one, the latter enabling the interface to work on the whole PQ plane. With a proper operation and the help of some storage devices, these systems can provide useful functions in the framework of demand response. A very useful characteristic which eases the possible switch towards a new operation strategy is that a transport system is usually operated by a single entity. The paper describes the functions the transport systems can perform and then focuses on the example of the Bergamo "San Vigilio" cable car, where a new drive has been installed. The refurbishment of the plant includes the installation of a 100kW, 18kWh lithium battery storage system which helps controlling the demand from the grid, provides the needed reactive power as well as acts as an active filter. Some economical evaluations complete the analysis.
DOI:10.1109/EnergyCon.2012.6347716