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Research Assistant (Group Leader)

Sebastian Liemann (M.Sc.)


Work Details

  • DFG Priority Programme 1984: „Systemtheoretische Analyse der Spannungsstabilität in leistungselektronisch dominierten hybriden elektrischen Energiesystemen“ (Teilprojektnummer 360460668)
  • Supporting lecture „Dynamik und Stabilität von Energieübertragungssystemen“ in winter semester 2019/20
  • Support of the Praktikumsamt ("internship office") from 2018 to 2022
  • S. Liemann, L. Robitzky and C. Rehtanz, "Einfluss eines variierenden Anteils leistungselektronischer Erzeugung in spannungskritischen Situationen im Übertragungsnetz", International ETG-Congress 2019; ETG Symposium, Esslingen, May 2019
     
  • S. Liemann, L. Robitzky and C. Rehtanz, "Impact of Varying Shares of Distributed Energy Resources on Voltage Stability in Electric PowerSystems", 2019 IEEE Milan PowerTech, Milan, Jun. 2019
     
  • S. Liemann, T. Hennig, L. Robitzky, C. Rehtanz and M. Finkelmann, "Analysis of the stability and dynamic responses of converter-based generation in case of system splits", IET Generation, Transmission & Distribution, vol. 13, no. 16, pp. 3696-3703, Aug. 2019. doi: 10.1049/iet-gtd.2018.6763
     
  • S. Liemann, M. Greve, S. Ohrem, M. Linders, T. Noll, C. Rehtanz, „Investigation on the Suitability of Equivalent Models of Subtransmission Level for Security Analyses at Transmission Level“. Electric Power Systems Research. Vol. 189. Dec. 2020. doi: doi.org/10.1016/j.epsr.2020.106712. Presented at the Power System Computation Conference (PSCC) 2020 (virtual).
     
  • S. Liemann and C. Rehtanz. “Dynamic Power Electronic Load Model for Transient Stability Analyses”. 14th IEEE PowerTech 2021. Madrid (virtual), July 2021.
  • S. Liemann, L. Strenge, P. Schultz, H. Hinners, J. Porst, M. Sarstedt, and F. Hellmann. “Probabilistic Stability Assessment for Dynamic Active Distribution Grids”. 14th IEEE PowerTech 2021. Madrid (virtual), July 2021.

  • S. Liemann, C. Rehtanz. „Power Response and Modelling Aspects of Power Electronic Loads in Case of Voltage Drops“, 2022 IREP Symposium Bulk Power System Dynamics and Control, Banff, Canada, Jul. 2022 (accepted)

Location & approach

The campus of TU Dort­mund University is located close to interstate junction Dort­mund West, where the Sauerlandlinie A 45 (Frankfurt-Dort­mund) crosses the Ruhrschnellweg B 1 / A 40. The best interstate exit to take from A 45 is "Dort­mund-Eichlinghofen" (closer to Campus Süd), and from B 1 / A 40 "Dort­mund-Dorstfeld" (closer to Campus Nord). Signs for the uni­ver­si­ty are located at both exits. Also, there is a new exit before you pass over the B 1-bridge leading into Dort­mund.

To get from Campus Nord to Campus Süd by car, there is the connection via Vogelpothsweg/Baroper Straße. We recommend you leave your car on one of the parking lots at Campus Nord and use the H-Bahn (suspended monorail system), which conveniently connects the two campuses.

TU Dort­mund University has its own train station ("Dort­mund Uni­ver­si­tät"). From there, suburban trains (S-Bahn) leave for Dort­mund main station ("Dort­mund Hauptbahnhof") and Düsseldorf main station via the "Düsseldorf Airport Train Station" (take S-Bahn number 1, which leaves every 20 or 30 minutes). The uni­ver­si­ty is easily reached from Bochum, Essen, Mülheim an der Ruhr and Duisburg.

You can also take the bus or subway train from Dort­mund city to the uni­ver­si­ty: From Dort­mund main station, you can take any train bound for the Station "Stadtgarten", usually lines U41, U45, U 47 and U49. At "Stadtgarten" you switch trains and get on line U42 towards "Hombruch". Look out for the Station "An der Palmweide". From the bus stop just across the road, busses bound for TU Dort­mund University leave every ten minutes (445, 447 and 462). Another option is to take the subway routes U41, U45, U47 and U49 from Dort­mund main station to the stop "Dort­mund Kampstraße". From there, take U43 or U44 to the stop "Dort­mund Wittener Straße". Switch to bus line 447 and get off at "Dort­mund Uni­ver­si­tät S".

The AirportExpress is a fast and convenient means of transport from Dort­mund Airport (DTM) to Dort­mund Central Station, taking you there in little more than 20 minutes. From Dort­mund Central Station, you can continue to the uni­ver­si­ty campus by interurban railway (S-Bahn). A larger range of in­ter­na­tio­nal flight connections is offered at Düsseldorf Airport (DUS), which is about 60 kilometres away and can be directly reached by S-Bahn from the uni­ver­si­ty station.

The H-Bahn is one of the hallmarks of TU Dort­mund University. There are two stations on Campus Nord. One ("Dort­mund Uni­ver­si­tät S") is directly located at the suburban train stop, which connects the uni­ver­si­ty directly with the city of Dort­mund and the rest of the Ruhr Area. Also from this station, there are connections to the "Technologiepark" and (via Campus Süd) Eichlinghofen. The other station is located at the dining hall at Campus Nord and offers a direct connection to Campus Süd every five minutes.

The facilities of TU Dort­mund University are spread over two campuses, the larger Campus North and the smaller Campus South. Additionally, some areas of the uni­ver­si­ty are located in the adjacent "Technologiepark".

Site Map of TU Dort­mund University (Second Page in English)