Page 9 - Innovation in energy management: contribution of railways to sustainable mobility
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during the last five years, important initiatives have also continued to be developed with
                  the aim of reducing their consumption. Among others, ADIF Alta Velocidad continues to
                  count on the double catenary power supply system, of the 2 x 25 kV type, more efficient than
                  the simple single-phase 1 x 25 kV system. On the other hand, this type of network will be
                  the first to experience the benefits associated with the transformation of the conventional
                  electrical system to intelligent ones (during 2022 a pilot test is planned for a specific path
                  of this AC network).

                  In  the  same  way,  railway  operators  are  also  developing  different  lines  of  work:  Renfe
                  continues to implement automatic efficient driving equipment, as well as the development
                  of associated applications, in the EMUs S102, S112, S130 and S730.

                  ELECTRICAL NETWORKS

                  Since  2016,  R&D&i  projects  developed  in  the  field  of  electrification  systems  have  been
                  remarkably  diverse,  especially  the  European  collaborative  projects  such  as  In2Rail,
                  In2Stempo and E-LOBSTER, all of which are related to the implementation of new intelligent
                  assets in the railway electrical network and/or integration in equally intelligent networks.
                  These projects have continued to lay the foundations for the development of more efficient
                  railway electrical networks, which demonstrates the commitment of the sector to continue
                  innovating and improving the railway electrical infrastructure.

                  The main functions to be developed by this type of network are the following:

                        Improve and make the management of electricity flows in the railway system more
                        Improve  the  operation  and  maintenance  of  electrical  infrastructure  assets,
                         maximizing the possibilities of remote management and minimizing the overall cost
                         of operation and maintenance.
                        Obtain  a  more  autonomous  and  dynamic  response  from  the  network.  With
                         information  management,  it  is  possible  to  act  on  the  devices  and  improve  the
                         response and protection of the infrastructure against failures or the coordination of
                         distributed energy resources to avoid power supply failures, increasing the safety
                         and reliability of the railway electrical system.
                        Broadenunderstanding of the wide variety of consumption points in a network as
                         complex as the railway traction network.
                        Control power flows considering the possible introduction of delocalised electricity
                         generators based on renewable sources.
                        Help future decision-making on strategic approaches related to electricity, such as
                         the possible evolution towards a self-consumption model in certain locations and
                         the redefinition of the electricity supply model (energy storage systems, etc. may be

                           Position paper: Innovation in energy management: contribution of railways to sustainable mobility
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