Use of AMT Transformers and Distributed Storage Systems to Enhance Electrical Feeding Systems for Tramways

Romano Giglioli, Giovanni Lutzemberger and Luca Sani
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Romano Giglioli: Department of Energy, Systems, Territory and Constructions, University of Pisa, 56122 Pisa, Italy
Giovanni Lutzemberger: Department of Energy, Systems, Territory and Constructions, University of Pisa, 56122 Pisa, Italy
Luca Sani: Department of Energy, Systems, Territory and Constructions, University of Pisa, 56122 Pisa, Italy

Energies, 2020, vol. 13, issue 18, 1-15

Abstract: Tramway systems are more and more diffused today, to reduce pollution and greenhouse emissions. However, their electrical feeding substations can have significant margin for improvement. Therefore, it is questionable which kind of changes can be introduced, by changing their main features. First of all, transformer technology can be enhanced, by moving from the standard transformer to the amorphous metal one; thus, guaranteeing a significant reduction in losses. Then, by installing one dedicated storage systems for each substation. This solution can help to increase the energy efficiency; thus, recovering the tram braking energy and reducing the delivered energy from the grid, and also the reliability of the system; thus, guarantee different levels of services, in the case of failure of a feeding substation. This paper investigates in a systematic approach the two proposed solutions. In particular an amorphous metal transformer has been properly designed, and performance compared to the standard one. Then, evaluation of distributed storage installation was performed, and the aspects of reliability for these systems evaluated. Results have shown the general feasibility of the proposed solutions, showing a significant energy saving with respect to the conventional ones.

Keywords: amorphous transformer; energy storage; failure; feeding substation; tramway (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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