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Smart Metering

One of the keys of innovation for the future of the railway is the enhancement of the energy efficiency. This objective can be reached by using methods of smart metering. Smart metering relies on a distributed energy resource management system, which aims to manage the different energy flows of the entire railway system [107]. A smart metering system allows to obtain a knowledge of all consumers and generators energy flows, which enable to set up energy savings, losses reduction and efficient energy management.

The WP11 of the In2Rail European project [119] aims to develop a Smart Metering for a Railway Distributed Energy Resource Management System (RDERMS). The main objectives of the works are to design an open system dedicated to the fine mapping of different energy flows within the whole Railway System on a synchronized time basis. The workflow methodology is defined around the design of the physical and software support, linking together measurements taken at different locations, subsystems, and temporal information. The smart metering aims to reduce the energy bill, optimise asset management and increase capacity. Such systems rely on sensors deployed in the railway system (on board and at trackside), communication between sensors and communication between the train and the ground.

Smart metering systems relies then in particular on sensor networks and communication protocols. Intelligent WSN have to be set up to guarantee successful collection of distributed sensor measurements. Then, trackside and on board devices can be installed. Wireless communication systems have then to be set up from train to ground to transmit the amount of different energy measurement data, requiring broadband links.

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