Jämförande simulering och modellering av framtida järnvägars elenergiförsörjning
Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Comparative simulation and modeling of electric energy supply for future railways (English)
In this thesis, the Train Power System Simulator (TPSS) has been compared and verified with the commercial simulator TracFeed® Simulation (TracFeed). The basis for the comparison was a given part of the Swedish railway system, with steel transportation trains. Primarily, emphasis was placed on running time and energy consumption in simulation results. Two transformer systems were analyzed, booster and auto transformers. The high voltage transmission line, parallel to the railroad track, was disconnected in some simulations. Inclination detail level, describing slope of the railway tracks, was different in the two simulators. Therefore, the inclination was set to zero in some simulations, to make the conditions more equal for comparison.
In simulations with inclination, the running time was 17-22 minutes shorter in TPSS than in TracFeed. The energy consumption for one train in TPSS was 23 % lower than in TracFeed. Without inclination, the running time in TPSS was only about one minute longer than in TracFeed. The energy consumption, without inclination, was only 3 % lower than the TracFeed results.
The change in active and reactive power of the trains was also studied. In addition, the power flow from the converter stations was analyzed. TPSS simulation times were nearly one minute, while the mean simulation time in TracFeed was four minutes. The simulations showed that there are possibilities of development of TPSS. A necessary development concerns the inclination. The possibility to simplify TracFeed was also tested. A couple of neural networks were built in order to test the feasibility of replacing some calculations with simulations.
Place, publisher, year, edition, pages
2009. , 54 p.
UPTEC ES, ISSN 1650-8300 ; 09017
Engineering and Technology
IdentifiersURN: urn:nbn:se:uu:diva-162741OAI: oai:DiVA.org:uu-162741DiVA: diva2:461606
Master Programme in Energy Systems Engineering
Carlsson, BengtTengblad, Ulla