Abstract
This paper investigates the benefits of using the on-board energy storage devices (OESD) and wayside energy storage devices (WESD) in light rail transportation (metro and tram) systems. The analysed benefits are the use of OESD and WESD as a source of supply in an emergency metro scenario to safely evacuate the passengers blocked in a metro train between stations; the use of OESD for catenary free sections, the benefits of using the WESD as an energy source for electrical car charging points and tram traction power supply; the benefits of using a central communication system between trams, cars, WESD and electrical car charging points. The authors investigated the use of: OESD with batteries for a catenary free section for different scenarios (full route or a catenary free section between two stations); the charge of OESD between stations (in parallel with tram motoring) to decrease the charging dwell time at stations and to help in achieving the operational timetable; the thermal effect of the additional load on the overhead contact system (OCS) when the tram is charging between stations; the sizing of OESD and WESD for emergency feeding in a metro system. The authors investigated the use of the WESD as a source of energy for the electrical car charging points to reduce the car pollution and carbon emissions. Presented in the paper is the enhanced multi train simulator with WESD prepared for the analyses conducted. The paper describes the DC electrical solver and WESD control method. A validation of the software has been conducted in regard to the substation voltage, WESD energy balance and WESD control.
Highlights
The European Union countries are committed to reducing the level of greenhouse gas emissions from transport by 60% by 2050 [1]
The electrified transportation system model can be divided in two parts: in the first part the train mechanical calculations are conducted as described in [23] and the second part consists of the electrical network solver which is described in the section below
In addition to the outputs described in [23] the software output data that are obtained from the simulation model cover: Substations power, voltage, peak current, 60 s root mean square (RMS) current and 900 s
Summary
The European Union countries are committed to reducing the level of greenhouse gas emissions from transport by 60% by 2050 [1]. The case study involved a detailed analysis of: Metro emergency feeding comparison between WESD and OESD; The use of OESD for a tram catenary free section and the thermal impact of the additional load on the contact wire if the OESD is charged between stations when the trams are motoring; The effect of tram speed on the OESD required energy capacity for the catenary free section; The benefits on the tram service (timetable) if the OESD is charged from the overhead contact system between stations; An investigation on the benefits of using the WESD as an energy source for electrical cars charging points and tram traction power supply.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
