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Elektrifiering av Uppsalas stadsbussar: Lösningar för att hantera kapacitetsbristen i en växande region
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
2019 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Electrification of city buses in Uppsala : Solutions for managing the capacity shortage in a growing region (English)
Abstract [en]

Region Uppsala, who are responsible for the public transport in Uppsala county, are currently building a new city bus depot. Due to capacity shortage in the transmission grid to Uppsala, the operation of the new bus depot must be adapted to a limited power output. In addition to this, the city of Uppsala aims to introduce the first electrical buses by 2021.

The purpose of this study was to investigate how electrical buses of different penetration level will affect the power demand at the new city bus depot. The results showed that the current power limitation was already exceeded by 200 kW if 12 electrical buses were to be introduced. Therefore, different technical solutions were evaluated in terms of increasing the penetration level of electrical buses. These solutions were evaluated by a life cycle cost analysis. The cheapest solution was to connect the city bus depot with the regional bus depot. This is possible because the grid connection to the regional bus depot is oversized, compared to its load. However, this solution does not solve the general problem of capacity-shortage in Uppsala and the legality of it must be analyzed further. Two other solutions that were investigated were a local battery storage and a gas engine coupled with a generator at the depot. None of the solutions could solve the power problem at the depot on its own. For a scenario with more than 40 electrical buses, the different technical solutions that were investigated must be combined.

Place, publisher, year, edition, pages
2019. , p. 94
Series
UPTEC STS, ISSN 1650-8319 ; 19018
Keywords [sv]
Batterilager, biogasmotor, bussdepå, depåladdning, elbussar, elektrifiering av kollektivtrafik, kapacitetsbrist, stadsbusstrafik.
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:uu:diva-385912OAI: oai:DiVA.org:uu-385912DiVA, id: diva2:1326491
External cooperation
Region Uppsala
Educational program
Systems in Technology and Society Programme
Presentation
2019-06-04, Å64119, Lägerhyddsvägen 2, 752 37, Uppsala, 15:15 (Swedish)
Supervisors
Examiners
Available from: 2019-06-18 Created: 2019-06-18 Last updated: 2019-06-18Bibliographically approved

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Citation style
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